Fix typo (#9632)

This reverts commit 27de86483d.

.appveyor.yml

@@ -1,100 +0,0 @@
-skip_commits:
-  files:
-    - ".github/**/*"
-    - ".gitmodules"
-    - "docs/**/*"
-    - "wheels/**/*"
-
-version: '{build}'
-clone_folder: c:\pillow
-init:
-- ECHO %PYTHON%
-#- ps: iex ((new-object net.webclient).DownloadString('https://raw.githubusercontent.com/appveyor/ci/master/scripts/enable-rdp.ps1'))
-# Uncomment previous line to get RDP access during the build.
-
-environment:
-  COVERAGE_CORE: sysmon
-  EXECUTABLE: python.exe
-  TEST_OPTIONS:
-  DEPLOY: YES
-  matrix:
-  - PYTHON: C:/Python312
-    ARCHITECTURE: x86
-    APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2022
-  - PYTHON: C:/Python38-x64
-    ARCHITECTURE: AMD64
-    APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2017
-
-
-install:
-- '%PYTHON%\%EXECUTABLE% --version'
-- '%PYTHON%\%EXECUTABLE% -m pip install --upgrade pip'
-- curl -fsSL -o pillow-test-images.zip https://github.com/python-pillow/test-images/archive/main.zip
-- 7z x pillow-test-images.zip -oc:\
-- xcopy /S /Y c:\test-images-main\* c:\pillow\tests\images
-- curl -fsSL -o nasm-win64.zip https://raw.githubusercontent.com/python-pillow/pillow-depends/main/nasm-2.16.03-win64.zip
-- 7z x nasm-win64.zip -oc:\
-- choco install ghostscript --version=10.3.1
-- path c:\nasm-2.16.03;C:\Program Files\gs\gs10.03.1\bin;%PATH%
-- cd c:\pillow\winbuild\
-- ps: |
-        c:\python38\python.exe c:\pillow\winbuild\build_prepare.py -v --depends=C:\pillow-depends\
-        c:\pillow\winbuild\build\build_dep_all.cmd
-        $host.SetShouldExit(0)
-- path C:\pillow\winbuild\build\bin;%PATH%
-
-build_script:
-- cd c:\pillow
-- winbuild\build\build_env.cmd
-- '%PYTHON%\%EXECUTABLE% -m pip install -v -C raqm=vendor -C fribidi=vendor .'
-- '%PYTHON%\%EXECUTABLE% selftest.py --installed'
-
-test_script:
-- cd c:\pillow
-- '%PYTHON%\%EXECUTABLE% -m pip install pytest pytest-cov pytest-timeout defusedxml numpy olefile pyroma'
-- c:\"Program Files (x86)"\"Windows Kits"\10\Debuggers\x86\gflags.exe /p /enable %PYTHON%\%EXECUTABLE%
-- '%PYTHON%\%EXECUTABLE% -c "from PIL import Image"'
-- '%PYTHON%\%EXECUTABLE% -m pytest -vx --cov PIL --cov Tests --cov-report term --cov-report xml Tests'
-#- '%PYTHON%\%EXECUTABLE% test-installed.py -v -s %TEST_OPTIONS%' TODO TEST_OPTIONS with pytest?
-
-after_test:
-- curl -Os https://uploader.codecov.io/latest/windows/codecov.exe
-- .\codecov.exe --file coverage.xml --name %PYTHON% --flags AppVeyor
-
-matrix:
-  fast_finish: true
-
-cache:
-- '%LOCALAPPDATA%\pip\Cache'
-
-artifacts:
-- path: pillow\*.egg
-  name: egg
-- path: pillow\*.whl
-  name: wheel
-
-before_deploy:
-  - cd c:\pillow
-  - '%PYTHON%\%EXECUTABLE% -m pip wheel -v -C raqm=vendor -C fribidi=vendor .'
-  - ps: Get-ChildItem .\*.whl | % { Push-AppveyorArtifact $_.FullName -FileName $_.Name }
-
-deploy:
-  provider: S3
-  region: us-west-2
-  access_key_id: AKIAIRAXC62ZNTVQJMOQ
-  secret_access_key:
-    secure: Hwb6klTqtBeMgxAjRoDltiiqpuH8xbwD4UooDzBSiCWXjuFj1lyl4kHgHwTCCGqi
-  bucket: pillow-nightly
-  folder: win/$(APPVEYOR_BUILD_NUMBER)/
-  artifact: /.*egg|wheel/
-  on:
-    APPVEYOR_REPO_NAME: python-pillow/Pillow
-    branch: main
-    deploy: YES
-
-
-# Uncomment the following lines to get RDP access after the build/test and block for
-# up to the timeout limit (~1hr)
-#
-#on_finish:
-#- ps: $blockRdp = $true; iex ((new-object net.webclient).DownloadString('https://raw.githubusercontent.com/appveyor/ci/master/scripts/enable-rdp.ps1'))

.ci/after_success.sh

@@ -2,8 +2,4 @@
 
 # gather the coverage data
 python3 -m pip install coverage
-if [[ $MATRIX_DOCKER ]]; then
-  python3 -m coverage xml --ignore-errors
-else
-  python3 -m coverage xml
-fi
+python3 -m coverage xml

.ci/build.sh

@@ -3,8 +3,5 @@
 set -e
 
 python3 -m coverage erase
-if [ $(uname) == "Darwin" ]; then
-    export CPPFLAGS="-I/usr/local/miniconda/include";
-fi
 make clean
 make install-coverage

.ci/install.sh

@@ -2,73 +2,58 @@
 
 aptget_update()
 {
-    if [ ! -z $1 ]; then
+    if [ -n "$1" ]; then
         echo ""
         echo "Retrying apt-get update..."
         echo ""
     fi
-    output=`sudo apt-get update 2>&1`
+    output=$(sudo apt-get update 2>&1)
     echo "$output"
     if [[ $output == *[WE]:\ * ]]; then
         return 1
     fi
 }
-if [[ $(uname) != CYGWIN* ]]; then
-    aptget_update || aptget_update retry || aptget_update retry
-fi
+aptget_update || aptget_update retry || aptget_update retry
 
 set -e
 
-if [[ $(uname) != CYGWIN* ]]; then
-    sudo apt-get -qq install libfreetype6-dev liblcms2-dev python3-tk\
-                             ghostscript libffi-dev libjpeg-turbo-progs libopenjp2-7-dev\
-                             cmake meson imagemagick libharfbuzz-dev libfribidi-dev\
-                             sway wl-clipboard libopenblas-dev
-fi
+sudo apt-get -qq install libfreetype6-dev liblcms2-dev libtiff-dev python3-tk\
+                         ghostscript libjpeg-turbo8-dev libopenjp2-7-dev\
+                         cmake meson imagemagick libharfbuzz-dev libfribidi-dev\
+                         sway wl-clipboard libopenblas-dev nasm
 
 python3 -m pip install --upgrade pip
 python3 -m pip install --upgrade wheel
-# TODO Update condition when cffi supports 3.13
-if ! [[ "$GHA_PYTHON_VERSION" == "3.13" ]]; then PYTHONOPTIMIZE=0 python3 -m pip install cffi ; fi
 python3 -m pip install coverage
 python3 -m pip install defusedxml
+python3 -m pip install ipython
 python3 -m pip install olefile
 python3 -m pip install -U pytest
 python3 -m pip install -U pytest-cov
 python3 -m pip install -U pytest-timeout
 python3 -m pip install pyroma
+# optional test dependencies, only install if there's a binary package.
+python3 -m pip install --only-binary=:all: numpy || true
+python3 -m pip install --only-binary=:all: pyarrow || true
 
-if [[ $(uname) != CYGWIN* ]]; then
-    # TODO Update condition when NumPy supports 3.13
-    if ! [[ "$GHA_PYTHON_VERSION" == "3.13" ]]; then python3 -m pip install numpy ; fi
-
-    # PyQt6 doesn't support PyPy3
-    if [[ $GHA_PYTHON_VERSION == 3.* ]]; then
-        sudo apt-get -qq install libegl1 libxcb-cursor0 libxcb-icccm4 libxcb-image0 libxcb-keysyms1 libxcb-randr0 libxcb-render-util0 libxcb-shape0 libxkbcommon-x11-0
-        python3 -m pip install pyqt6
-    fi
-
-    # Pyroma uses non-isolated build and fails with old setuptools
-    if [[
-        $GHA_PYTHON_VERSION == pypy3.9
-        || $GHA_PYTHON_VERSION == 3.8
-        || $GHA_PYTHON_VERSION == 3.9
-    ]]; then
-        # To match pyproject.toml
-        python3 -m pip install "setuptools>=67.8"
-    fi
-
-    # webp
-    pushd depends && ./install_webp.sh && popd
-
-    # libimagequant
-    pushd depends && ./install_imagequant.sh && popd
-
-    # raqm
-    pushd depends && ./install_raqm.sh && popd
-
-    # extra test images
-    pushd depends && ./install_extra_test_images.sh && popd
-else
-    cd depends && ./install_extra_test_images.sh && cd ..
+# PyQt6 doesn't support PyPy3
+if [[ $GHA_PYTHON_VERSION == 3.* ]]; then
+    sudo apt-get -qq install libegl1 libxcb-cursor0 libxcb-icccm4 libxcb-image0 libxcb-keysyms1 libxcb-randr0 libxcb-render-util0 libxcb-shape0 libxkbcommon-x11-0
+    # pyqt6 doesn't yet support free-threading; only install if a wheel is available
+    python3 -m pip install --only-binary=:all: pyqt6 || true
 fi
+
+# webp
+pushd depends && ./install_webp.sh && popd
+
+# libimagequant
+pushd depends && ./install_imagequant.sh && popd
+
+# raqm
+pushd depends && sudo ./install_raqm.sh && popd
+
+# libavif
+pushd depends && ./install_libavif.sh && popd
+
+# extra test images
+pushd depends && ./install_extra_test_images.sh && popd

.ci/requirements-cibw.txt

@@ -1 +1 @@
-cibuildwheel==2.19.1
+cibuildwheel==3.4.1

.ci/requirements-mypy.txt

@@ -1 +1,15 @@
-mypy==1.10.1
+mypy==1.20.2
+arro3-compute
+arro3-core
+IceSpringPySideStubs-PyQt6
+IceSpringPySideStubs-PySide6
+ipython
+numpy
+packaging
+pyarrow-stubs
+pybind11
+pytest
+types-atheris
+types-defusedxml
+types-olefile
+types-setuptools

.ci/requirements-sbom.txt

@@ -0,0 +1 @@
+check-jsonschema==0.37.1

.ci/test.cmd

@@ -0,0 +1,3 @@
+python.exe -c "from PIL import Image"
+IF ERRORLEVEL 1 EXIT /B
+python.exe -bb -m pytest -vv -x -W always --cov PIL --cov Tests --cov-report term --cov-report xml Tests

.ci/test.sh

@@ -4,4 +4,4 @@ set -e
 
 python3 -c "from PIL import Image"
 
-python3 -bb -m pytest -v -x -W always --cov PIL --cov Tests --cov-report term Tests $REVERSE
+python3 -bb -m pytest -vv -x -W always --cov PIL --cov Tests --cov-report term --cov-report xml Tests $REVERSE

.clang-format

@@ -1,9 +1,30 @@
 # A clang-format style that approximates Python's PEP 7
 # Useful for IDE integration
+Language: C
 BasedOnStyle: Google
 AlwaysBreakAfterReturnType: All
 AllowShortIfStatementsOnASingleLine: false
-AlignAfterOpenBracket: AlwaysBreak
+AlignAfterOpenBracket: BlockIndent
+BinPackArguments: false
+BinPackParameters: false
+BreakBeforeBraces: Attach
+ColumnLimit: 88
+DerivePointerAlignment: false
+IndentGotoLabels: false
+IndentWidth: 4
+PointerAlignment: Right
+ReflowComments: true
+SortIncludes: false
+SpaceBeforeParens: ControlStatements
+SpacesInParentheses: false
+TabWidth: 4
+UseTab: Never
+---
+Language: Cpp
+BasedOnStyle: Google
+AlwaysBreakAfterReturnType: All
+AllowShortIfStatementsOnASingleLine: false
+AlignAfterOpenBracket: BlockIndent
 BinPackArguments: false
 BinPackParameters: false
 BreakBeforeBraces: Attach
@@ -11,7 +32,6 @@ ColumnLimit: 88
 DerivePointerAlignment: false
 IndentGotoLabels: false
 IndentWidth: 4
-Language: Cpp
 PointerAlignment: Right
 ReflowComments: true
 SortIncludes: false

.coveragerc

@@ -18,7 +18,5 @@ exclude_also =
 
 [run]
 omit =
-    Tests/32bit_segfault_check.py
-    Tests/bench_cffi_access.py
-    Tests/check_*.py
+    checks/*.py
     Tests/createfontdatachunk.py

.github/CONTRIBUTING.md

@@ -9,7 +9,7 @@ Please send a pull request to the `main` branch. Please include [documentation](
 - Fork the Pillow repository.
 - Create a branch from `main`.
 - Develop bug fixes, features, tests, etc.
-- Run the test suite. You can enable GitHub Actions (https://github.com/MY-USERNAME/Pillow/actions) and [AppVeyor](https://ci.appveyor.com/projects/new) on your repo to catch test failures prior to the pull request, and [Codecov](https://codecov.io/gh) to see if the changed code is covered by tests.
+- Run the test suite. You can enable GitHub Actions (https://github.com/MY-USERNAME/Pillow/actions) on your repo to catch test failures prior to the pull request, and [Codecov](https://codecov.io/gh) to see if the changed code is covered by tests.
 - Create a pull request to pull the changes from your branch to the Pillow `main`.
 
 ### Guidelines
@@ -17,9 +17,8 @@ Please send a pull request to the `main` branch. Please include [documentation](
 - Separate code commits from reformatting commits.
 - Provide tests for any newly added code.
 - Follow PEP 8.
-- When committing only documentation changes please include `[ci skip]` in the commit message to avoid running tests on AppVeyor.
+- When committing only documentation changes please include `[ci skip]` in the commit message to avoid running extra tests.
 - Include [release notes](https://github.com/python-pillow/Pillow/tree/main/docs/releasenotes) as needed or appropriate with your bug fixes, feature additions and tests.
-- Do not add to the [changelog](https://github.com/python-pillow/Pillow/blob/main/CHANGES.rst) for proposed changes, as that is updated after changes are merged.
 
 ## Reporting Issues
 

.github/FUNDING.yml

@@ -1 +1,2 @@
-tidelift: "pypi/pillow"
+github: python-pillow
+tidelift: pypi/pillow

.github/INCIDENT_RESPONSE.md

@@ -0,0 +1,424 @@
+# Incident Response Plan — Pillow
+
+This document describes how the Pillow maintainers detect, triage, fix, communicate, and
+learn from security incidents. It supplements the existing [Security Policy](SECURITY.md)
+and [Release Checklist](../RELEASING.md).
+
+---
+
+## 1. Preparation
+
+Maintaining readiness before an incident occurs reduces response time and errors under pressure.
+
+### 1.1 Version Support Matrix
+
+Security fixes are applied to the **latest stable release only**. Users on older versions
+are expected to upgrade. Reporters should assume only the latest release will receive a patch.
+
+| Branch | Status |
+|---|---|
+| `main` / latest stable | ✅ Security fixes applied |
+| All older releases | ❌ No security support — please upgrade |
+
+### 1.2 Team Readiness
+
+The four members of the Pillow core team are in regular contact and share collective
+responsibility for incident response. Any core team member may act as Incident Lead.
+Contact details are known to all team members.
+
+### 1.3 Readiness Review
+
+At each quarterly release, maintainers should re-read this document and update any stale content.
+
+---
+
+## 2. Scope
+
+This plan covers:
+
+| Incident type | Examples |
+|---|---|
+| Vulnerability in Pillow's own Python or C code | Buffer overflow in an image decoder, integer overflow in `ImagingNew` |
+| Vulnerability in a bundled or wheel-shipped C library | libjpeg, libwebp, libtiff, libpng, openjpeg, libavif |
+| Supply-chain compromise | Malicious commit, stolen maintainer credentials, tampered PyPI wheel |
+| CI/CD or infrastructure compromise | GitHub Actions secret leak, Codecov breach, PyPI token exposure |
+| Critical non-security regression | Data-loss bug shipped in a release, crash on all supported platforms |
+
+---
+
+## 3. Definitions
+
+| Term | Meaning |
+|---|---|
+| **Incident** | Any event that compromises or threatens the confidentiality, integrity, or availability of Pillow's code, release artifacts, or infrastructure. |
+| **Vulnerability** | A security flaw in Pillow or a bundled library that can be exploited by a crafted image or API call. |
+| **Incident Lead** | The maintainer who owns coordination of the response from triage to closure. |
+| **Embargo** | A period during which fix details are kept private to allow coordinated patching before public disclosure. |
+| **Yank** | A PyPI action that keeps a release downloadable by pinned users but removes it from default `pip install` resolution. |
+| **CVE** | Common Vulnerabilities and Exposures — a public identifier assigned to a specific vulnerability. |
+| **CNA** | CVE Numbering Authority — GitHub is a CNA and can assign CVEs directly through the advisory workflow. |
+
+---
+
+## 4. Roles
+
+| Role | Responsibility |
+|---|---|
+| **Incident Lead** | First maintainer to triage the report. Owns the incident until resolution. |
+| **Patch Owner** | Writes and tests the fix (may be the same person as Incident Lead). |
+| **Release Manager** | Cuts the point release following [RELEASING.md](../RELEASING.md). |
+| **Communications Owner** | Drafts the GitHub Security Advisory, announces on Mastodon, notifies distros. |
+| **Tidelift Contact** | For reports that arrive via Tidelift, coordinate through the Tidelift security portal. |
+
+One person may fill multiple roles.
+
+---
+
+## 5. Severity Classification
+
+Use the [CVSS 4.0](https://www.first.org/cvss/v4.0/specification-document) base score as
+a guide, mapped to the following levels:
+
+| Severity | CVSS | Definition | Target Response SLA |
+|---|---|---|---|
+| **Critical** | 9.0 – 10.0 | Remote code execution, arbitrary write, or complete integrity/confidentiality loss achievable by opening a crafted image | Best effort; embargoed release where possible |
+| **High** | 7.0 – 8.9 | Heap/stack buffer overflow, use-after-free, or significant information disclosure | Best effort |
+| **Medium** | 4.0 – 6.9 | Denial of service via crafted image, out-of-bounds read, limited info disclosure | Next scheduled quarterly release, or earlier point release if needed |
+| **Low** | 0.1 – 3.9 | Minor information disclosure, unlikely to be exploitable in practice | Next quarterly release |
+
+Supply-chain and CI/CD incidents are always treated as **Critical** regardless of CVSS.
+
+> **Note:** These are good-faith targets for a small volunteer maintainer team, not contractual SLAs. Public safety and transparency will always be prioritised, even when timing varies.
+
+---
+
+## 6. Detection Sources
+
+Vulnerabilities and incidents may be reported or discovered through:
+
+1. **GitHub private security advisory** — preferred channel; see [SECURITY.md](SECURITY.md)
+2. **Tidelift security contact** — <https://tidelift.com/docs/security>
+3. **External researcher / coordinated disclosure** — e.g. Google Project Zero, vendor PSIRT
+4. **Automated scanning** — Dependabot, GitHub code-scanning (CodeQL), CI fuzzing
+5. **Distro security teams** — Debian, Red Hat, Ubuntu, Alpine may report upstream
+6. **User bug report** — public issue (reassess if it has security implications and convert to a private advisory if needed)
+
+---
+
+## 7. Response Process
+
+### 7.1 Triage (all severities)
+
+1. **Acknowledge receipt** to the reporter within **72 hours** using the template in
+   [Appendix A](#appendix-a-communication-templates). Ask the reporter:
+   - How they would like to be credited (name, handle, or anonymous)
+   - Whether they intend to publish their own advisory, and if so, their preferred timeline
+   - Thank them explicitly — reporters do the project a favour by disclosing privately.
+2. Reproduce the issue. If the report is invalid, close it and notify the reporter.
+3. Assign a severity level ([Section 5: Severity Classification](#5-severity-classification)).
+4. If the GitHub Security Advisory was not created by the reporter, create one now and keep
+   it **private** until the fix is released. Add the reporter as a collaborator if they wish
+   to be involved.
+5. **Request a CVE** through the GitHub Security Advisory workflow (GitHub is a CVE
+   Numbering Authority — no separate MITRE form required). The CVE is reserved privately
+   and published automatically when the advisory goes public.
+6. **Escalation** — Escalate beyond the core maintainer team if any of the following apply:
+   - The fix requires changes to CPython or a dependency outside Pillow's control → contact the relevant upstream immediately
+   - A legal concern arises (e.g. GDPR-reportable data exposure) → contact the project's legal/fiscal sponsor
+   - The Incident Lead is unreachable for > 24 hours on a Critical issue → any other maintainer may assume the role
+
+### 7.2 Fix Development
+
+1. Develop the fix in a **private fork** or directly in the private security advisory
+   workspace on GitHub. Do **not** push to a public branch before the embargo lifts.
+2. Write a regression test that fails before the fix and passes after.
+3. Review the patch with at least one other maintainer.
+
+### 7.3 Standard (Non-Embargoed) Release
+
+For Medium and Low severity, or when no distro pre-notification is needed:
+
+1. Merge the fix to `main`, then cherry-pick to all affected release branches
+   (see [RELEASING.md — Point release](../RELEASING.md)).
+2. Amend commit messages to include the CVE identifier.
+3. Follow the [Point release](../RELEASING.md#point-release) process in RELEASING.md to
+   tag, push, and confirm wheels are live on PyPI.
+4. Publish the GitHub Security Advisory (this simultaneously publishes the CVE).
+
+### 7.4 Embargoed Release
+
+For Critical and High severity where distro pre-notification improves user safety:
+
+1. Prepare patches against all affected release branches and test locally.
+2. Agree on an **embargo date** with the reporter (typically 7–14 days out, up to 90 days for
+   complex issues).
+3. Privately send the patch to distros via the
+   [linux-distros](https://oss-security.openwall.org/wiki/mailing-lists/distros) mailing list
+   or directly to individual distro security teams.
+4. On the embargo date:
+   - Amend commit messages with the CVE identifier.
+   - Follow the [Embargoed release](../RELEASING.md#embargoed-release) process in
+     RELEASING.md to tag, push, and confirm wheels are live on PyPI.
+   - Publish the GitHub Security Advisory.
+
+### 7.5 Supply-Chain / Infrastructure Compromise
+
+1. **Immediately** revoke any potentially compromised credentials:
+   - PyPI API tokens
+   - GitHub personal access tokens and OAuth apps
+   - Codecov or other CI service tokens
+2. Audit recent commits and releases for tampering:
+   - Verify release tags against known-good SHAs
+   - Re-inspect any wheel published since the potential compromise window
+3. If a PyPI release is suspected to be tampered: yank it immediately via the
+   [PyPI release management page](https://pypi.org/manage/project/Pillow/releases/)
+   (login required); see [https://pypi.org/security/](https://pypi.org/security/) for
+   reporting to the PyPI security team.
+4. Issue a public advisory describing the scope and any user action required.
+
+### 7.6 Recovery
+
+After the fix is released and the advisory is public:
+
+1. Verify that the patched wheels are live on PyPI and passing CI across all supported platforms.
+2. Confirm any yanked releases are handled correctly .
+3. Resume normal development operations on `main`.
+4. Monitor the GitHub issue tracker and Mastodon for user reports of residual problems for at least **72 hours** post-release.
+5. Close the private GitHub Security Advisory once recovery is confirmed.
+
+---
+
+## 8. Communication
+
+### Internal (during embargo)
+- Use the **private GitHub Security Advisory** thread for coordination with the reporter.
+- Use private communication channels for all other coordination.
+- Do not discuss details in public issues, PRs, or Gitter/IRC channels.
+
+### External (at or after disclosure)
+
+| Audience | Channel | Timing |
+|---|---|---|
+| General users | [GitHub Security Advisory](https://github.com/python-pillow/Pillow/security/advisories) | At release |
+| PyPI ecosystem | CVE published via advisory | At release |
+| Downstream distros | Direct email or linux-distros list | Before embargo date (embargoed) |
+| Tidelift subscribers | Tidelift security portal | At release (or coordinated) |
+| Community | [Mastodon @pillow](https://fosstodon.org/@pillow) | At release |
+
+**Advisory content should include:**
+- CVE identifier and CVSS score
+- Affected Pillow versions
+- Fixed version(s)
+- Nature of the vulnerability (without full exploit details if still fresh)
+- Credit to the reporter (with their consent)
+- Upgrade instructions (`python3 -m pip install --upgrade Pillow`)
+
+---
+
+## 9. Dependency Map
+
+Understanding what Pillow depends on (upstream) and what depends on Pillow (downstream)
+is essential for scoping impact and coordinating notifications during an incident.
+
+### 9.1 Upstream Dependencies
+
+#### Bundled C libraries (shipped in official wheels)
+
+These libraries are compiled into Pillow's binary wheels. A CVE in any of them may
+require a Pillow point release even if Pillow's own code is unchanged.
+
+| Library | Purpose | Security advisory tracker |
+|---|---|---|
+| [libjpeg-turbo](https://libjpeg-turbo.org/) | JPEG encode/decode | [GitHub](https://github.com/libjpeg-turbo/libjpeg-turbo/security) |
+| [libpng](http://www.libpng.org/pub/png/libpng.html) | PNG encode/decode within FreeType 2, OpenJPEG and WebP | [SourceForge](https://sourceforge.net/p/libpng/bugs/) |
+| [libtiff](https://libtiff.gitlab.io/libtiff/) | TIFF encode/decode | [GitLab](https://gitlab.com/libtiff/libtiff/-/work_items) |
+| [libwebp](https://chromium.googlesource.com/webm/libwebp) | WebP encode/decode | [Chromium tracker](https://issues.webmproject.org/issues) |
+| [libavif](https://github.com/AOMediaCodec/libavif) | AVIF encode/decode | [GitHub](https://github.com/AOMediaCodec/libavif/security) |
+| [aom](https://aomedia.googlesource.com/aom/) | AV1 codec (AVIF) | [Chromium tracker](https://aomedia.issues.chromium.org/issues) |
+| [dav1d](https://code.videolan.org/videolan/dav1d) | AV1 decode (AVIF) | [VideoLAN Security](https://www.videolan.org/security/) |
+| [openjpeg](https://www.openjpeg.org/) | JPEG 2000 encode/decode | [GitHub](https://github.com/uclouvain/openjpeg/security) |
+| [freetype2](https://freetype.org/) | Font rendering | [GitLab](https://gitlab.freedesktop.org/freetype/freetype/-/work_items) |
+| [lcms2](https://www.littlecms.com/) | ICC color management | [GitHub](https://github.com/mm2/Little-CMS/security) |
+| [harfbuzz](https://harfbuzz.github.io/) | Text shaping (via raqm) | [GitHub](https://github.com/harfbuzz/harfbuzz/security) |
+| [raqm](https://github.com/HOST-Oman/libraqm) | Complex text layout | [GitHub](https://github.com/HOST-Oman/libraqm) |
+| [fribidi](https://github.com/fribidi/fribidi) | Unicode bidi (via raqm) | [GitHub](https://github.com/fribidi/fribidi) |
+| [zlib](https://zlib.net/) | Deflate compression | [zlib.net](https://zlib.net/) |
+| [liblzma / xz-utils](https://tukaani.org/xz/) | XZ/LZMA compression | [GitHub](https://github.com/tukaani-project/xz/security) |
+| [bzip2](https://gitlab.com/bzip2/bzip2) | BZ2 compression | [GitLab](https://gitlab.com/bzip2/bzip2/-/work_items) |
+| [zstd](https://github.com/facebook/zstd) | Zstandard compression | [GitHub](https://github.com/facebook/zstd/security) |
+| [brotli](https://github.com/google/brotli) | Brotli compression | [GitHub](https://github.com/google/brotli/security) |
+| [libyuv](https://chromium.googlesource.com/libyuv/libyuv/) | YUV conversion | [Chromium tracker](https://libyuv.issues.chromium.org/issues) |
+
+#### Python-level dependencies
+
+| Package | Required? | Purpose |
+|---|---|---|
+| `setuptools` | Build-time only | Package build backend |
+| `pybind11` | Build-time only | Compile C files in parallel |
+| `olefile` | Optional (`fpx`, `mic` extras) | OLE2 container parsing (FPX, MIC formats) |
+| `defusedxml` | Optional (`xmp` extra) | Safe XML parsing for XMP metadata |
+
+See [`pyproject.toml`](../pyproject.toml) for the complete and authoritative list of
+optional dependencies.
+
+### 9.2 Responding to an Upstream Vulnerability
+
+When a CVE is published for a bundled C library:
+
+1. Assess whether the vulnerable code path is reachable through Pillow's API.
+2. If reachable, treat as a Pillow vulnerability and follow [Section 5: Severity Classification](#5-severity-classification).
+3. Update the bundled library version in the wheel build scripts and rebuild wheels.
+4. Reference the upstream CVE in Pillow's release notes and GitHub Security Advisory.
+5. If not reachable, document the rationale in a public issue so downstream distributors
+   can make informed decisions about patching their system packages.
+
+### 9.3 Downstream Dependencies
+
+A vulnerability in Pillow can have wide impact. Notify or consider the blast radius of
+these downstream consumers when assessing severity and planning communications.
+
+#### Linux distribution packages
+
+| Distribution | Package name | Security contact |
+|---|---|---|
+| Debian / Ubuntu | `python3-pil` | [Debian Security](https://www.debian.org/security/) / [Ubuntu Security](https://ubuntu.com/security) |
+| Fedora / RHEL / CentOS | `python3-pillow` | [Red Hat Security](https://access.redhat.com/security/) |
+| Alpine Linux | `py3-pillow` | [Alpine security](https://security.alpinelinux.org/) |
+| Arch Linux | `python-pillow` | [Arch security tracker](https://security.archlinux.org/) |
+| Homebrew | `pillow` | [Homebrew maintainers](https://github.com/Homebrew/homebrew-core/security) |
+| conda-forge | `pillow` | [conda-forge](https://github.com/conda-forge/pillow-feedstock) |
+
+#### Major Python ecosystem consumers
+
+These are high-profile projects known to depend on Pillow; a critical vulnerability may
+warrant proactive notification.
+
+| Project | Usage |
+|---|---|
+| [matplotlib](https://matplotlib.org/) | Image I/O for plots |
+| [scikit-image](https://scikit-image.org/) | Image processing |
+| [torchvision](https://github.com/pytorch/vision) (PyTorch) | Dataset loading, transforms |
+| [Keras / TensorFlow](https://keras.io/) | Image preprocessing utilities |
+| [Django](https://www.djangoproject.com/) | `ImageField` validation and thumbnail generation |
+| [Wagtail](https://wagtail.org/) | CMS image renditions |
+| [Plone](https://plone.org/) | CMS image handling |
+| [Jupyter / IPython](https://jupyter.org/) | Inline image display |
+| [ReportLab](https://www.reportlab.com/) | PDF image embedding |
+| [Tidelift subscribers](https://tidelift.com/) | Enterprise consumers (coordinated via Tidelift) |
+
+#### Pillow ecosystem plugins
+
+Third-party plugins extend Pillow and are distributed separately on PyPI. Their
+maintainers should be notified for Critical/High issues that affect the plugin API
+or the formats they decode. See the
+[full plugin list](https://pillow.readthedocs.io/en/stable/handbook/third-party-plugins.html#plugin-list).
+
+---
+
+## 11. Plan Maintenance
+
+This document is a living record. It should be kept current so it is useful when an incident actually occurs. Revisit it during the [Section 1.3 readiness review](#13-readiness-review) at each quarterly release.
+
+---
+
+## 12. References
+
+- [Security Policy](SECURITY.md)
+- [Release Checklist](../RELEASING.md)
+- [Contributing Guide](CONTRIBUTING.md)
+- [Tidelift Security Contact](https://tidelift.com/docs/security)
+- [GitHub: Privately reporting a security vulnerability](https://docs.github.com/en/code-security/security-advisories/guidance-on-reporting-and-writing/privately-reporting-a-security-vulnerability)
+- [GitHub as a CVE Numbering Authority (CNA)](https://docs.github.com/en/code-security/security-advisories/working-with-repository-security-advisories/about-repository-security-advisories)
+- [FIRST CVSS 4.0 Calculator](https://www.first.org/cvss/calculator/4.0)
+- [linux-distros mailing list](https://oss-security.openwall.org/wiki/mailing-lists/distros)
+- [OpenSSF CVD Guide](https://github.com/ossf/oss-vulnerability-guide) *(basis for this plan)*
+
+---
+
+## Appendix A: Communication Templates
+
+### A.1 Reporter Acknowledgment
+
+> Subject: Re: [Security] \<brief issue description\>
+>
+> Hi \<name\>,
+>
+> Thank you for taking the time to report this issue. We appreciate it.
+>
+> We have received your report and will review it as soon as possible. We will
+> keep you updated on our progress.
+>
+> Questions:
+>
+> - How would you like to be credited in the advisory? (name, handle,
+>   organisation, or anonymous)
+> - Do you plan to publish your own write-up or advisory? If so, do you have a
+>   disclosure date in mind?
+>
+> We apply coordinated disclosure principles to all vulnerability reports. If
+> you have any questions or concerns at any point, please reply to this thread.
+>
+> Thank you again,
+> The Pillow team
+
+### A.2 Embargoed Distro Notification
+
+> Subject: [EMBARGOED] Pillow security issue — \<CVE-XXXX-XXXXX\> — disclosure \<DATE\>
+>
+> This is an embargoed notification of a vulnerability in Pillow. Please keep this
+> information confidential until the disclosure date listed below.
+>
+> **CVE:** \<CVE-XXXX-XXXXX\>
+>
+> **Affected versions:** \<e.g. Pillow < 11.x.x\>
+>
+> **Fixed version:** \<version\>
+>
+> **Severity:** \<Critical / High / Medium / Low\> (CVSS \<score\>: \<vector\>)
+>
+> **Reporter:** \<name / affiliation, or "reported privately"\>
+>
+> **Public disclosure date:** \<DATE TIME UTC\>
+>
+> **Summary:**
+> \<One paragraph describing the vulnerability class and impact without a full exploit.\>
+>
+> **Proof of concept:**
+> \<Minimal reproducer or attached patch.\>
+>
+> **Remediation:**
+> Upgrade to Pillow \<fixed version\>. No known workaround.
+>
+> Please do not share this information, issue public patches, or make user communications
+> before the disclosure date. We will notify this list immediately if the date changes.
+>
+> — The Pillow maintainers
+
+### A.3 Public Disclosure Advisory
+
+*(Published as a GitHub Security Advisory; the CVE and date are included automatically.)*
+
+> **Summary:** \<One-paragraph technical summary.\>
+>
+> **CVE:** \<CVE-XXXX-XXXXX\>
+>
+> **Affected versions:** Pillow \< \<fixed version\>
+>
+> **Fixed version:** \<version\>
+>
+> **Severity:** \<rating\> (CVSS \<score\>)
+>
+> **Reporter:** \<credited name / "reported privately"\>
+>
+> **Details:**
+> \<Fuller technical description. Include attack scenario where helpful.\>
+>
+> **Remediation:**
+> ```
+> python3 -m pip install --upgrade Pillow
+> ```
+>
+> **Timeline:**
+> - Reported: \<date\>
+> - Fixed: \<date\>
+> - Disclosed: \<date\>

.github/ISSUE_TEMPLATE/RELEASE.md

@@ -0,0 +1,46 @@
+---
+name: "Maintainers only: Release"
+about: For maintainers to schedule a quarterly release
+labels: Release
+---
+
+## Main release
+
+Released quarterly on January 2nd, April 1st, July 1st and October 15th.
+
+* [ ] Open a release ticket e.g. https://github.com/python-pillow/Pillow/issues/3154
+* [ ] Develop and prepare release in `main` branch.
+  * [ ] Add release notes e.g. https://github.com/python-pillow/Pillow/pull/8885
+* [ ] Check [GitHub Actions](https://github.com/python-pillow/Pillow/actions) to confirm passing tests in `main` branch.
+* [ ] Check that all the wheel builds pass the tests in the [GitHub Actions "Wheels" workflow](https://github.com/python-pillow/Pillow/actions/workflows/wheels.yml) jobs by manually triggering them.
+* [ ] In compliance with [PEP 440](https://peps.python.org/pep-0440/), update version identifier in `src/PIL/_version.py`
+* [ ] Run pre-release check via `make release-test` in a freshly cloned repo.
+* [ ] Create branch and tag for release e.g.:
+  ```bash
+  git branch [[MAJOR.MINOR]].x
+  git tag [[MAJOR.MINOR]].0
+  git push --tags
+  ```
+* [ ] Check the [GitHub Actions "Wheels" workflow](https://github.com/python-pillow/Pillow/actions/workflows/wheels.yml) has passed, including the "Upload release to PyPI" job. This will have been triggered by the new tag.
+* [ ] Publish the [release on GitHub](https://github.com/python-pillow/Pillow/releases).
+* [ ] In compliance with [PEP 440](https://peps.python.org/pep-0440/), increment and append `.dev0` to version identifier in `src/PIL/_version.py` and then:
+  ```bash
+  git push --all
+   ```
+
+## Publicize release
+
+* [ ] Announce release availability via [Mastodon](https://fosstodon.org/@pillow) e.g. https://fosstodon.org/@pillow/110639450470725321
+
+## Documentation
+
+* [ ] Make sure the [default version for Read the Docs](https://pillow.readthedocs.io/en/stable/) is up-to-date with the release changes
+
+## Docker images
+
+* [ ] Update Pillow in the Docker Images repository
+  ```bash
+  git clone https://github.com/python-pillow/docker-images
+  cd docker-images
+  ./update-pillow-tag.sh [[release tag]]
+  ```

.github/SECURITY.md

@@ -1,5 +1,21 @@
 # Security policy
 
-To report sensitive vulnerability information, please use the [Tidelift security contact](https://tidelift.com/security). Tidelift will coordinate the fix and disclosure.
+## Reporting a vulnerability
 
-If your organisation/employer is a distributor of Pillow and would like advance notification of security-related bugs, please let us know your preferred contact method.
+To report sensitive vulnerability information, report it [privately on GitHub](https://github.com/python-pillow/Pillow/security/advisories/new).
+
+If you cannot use GitHub, use the [Tidelift security contact](https://tidelift.com/docs/security). Tidelift will coordinate the fix and disclosure.
+
+**DO NOT report sensitive vulnerability information in public.**
+
+## Threat model
+
+Pillow's primary attack surface is parsing untrusted image data. A full STRIDE threat model covering spoofing, tampering, repudiation, information disclosure, denial of service, and elevation of privilege is maintained in the [Security handbook page](https://pillow.readthedocs.io/en/latest/handbook/security.html).
+
+Key risks to be aware of when using Pillow to process untrusted images:
+
+- **Decompression bombs** — do not set `Image.MAX_IMAGE_PIXELS = None` in production.
+- **EPS files invoke Ghostscript** — block EPS input at the application layer unless strictly required.
+- **`ImageMath.unsafe_eval()`** — never pass user-controlled strings to this function; use `lambda_eval` instead.
+- **C extension memory safety** — keep Pillow and its bundled C libraries (libjpeg, libpng, libtiff, libwebp, etc.) up to date.
+- **Sandboxing** — for high-risk deployments, run image processing in a sandboxed subprocess.

.github/compare-dist-sizes.py

@@ -0,0 +1,271 @@
+"""Compare sizes of newly-built dists against the latest release on PyPI.
+
+Fetches file sizes for the latest Pillow release from the PyPI JSON API
+(no download required) and compares them to a directory of freshly-built
+wheels and sdist. Outputs a table to stdout (and to
+`$GITHUB_STEP_SUMMARY` if set).
+
+Usage:
+    `uv run .github/compare-dist-sizes.py <dist-dir>`
+"""
+
+# /// script
+# requires-python = ">=3.10"
+# dependencies = [
+#     "humanize",
+#     "prettytable",
+#     "termcolor",
+# ]
+# ///
+
+from __future__ import annotations
+
+import argparse
+import json
+import os
+import re
+import sys
+import urllib.request
+from pathlib import Path
+
+import humanize
+from prettytable import PrettyTable, TableStyle
+from termcolor import colored
+
+PYPI_JSON_URL = "https://pypi.org/pypi/pillow/json"
+
+# Wheel filename: {distribution}-{version}(-{build})?-{python}-{abi}-{platform}.whl
+# sdist filename: {distribution}-{version}.tar.gz
+WHEEL_RE = re.compile(
+    r"^[^-]+-[^-]+(?:-(?P<build>\d[^-]*))?"
+    r"-(?P<python>[^-]+)-(?P<abi>[^-]+)-(?P<platform>[^-]+)\.whl$",
+    re.IGNORECASE,
+)
+SDIST_RE = re.compile(
+    r"^(?P<dist>[^-]+)-(?P<version>.+)\.tar\.gz$",
+    re.IGNORECASE,
+)
+
+
+def key_for(filename: str) -> str:
+    """Return a version-independent identifier for a dist file."""
+    if m := WHEEL_RE.match(filename):
+        build = f"{m['build']}-" if m["build"] else ""
+        return f"wheel:{build}{m['python']}-{m['abi']}-{m['platform']}"
+    if SDIST_RE.match(filename):
+        return "sdist"
+    msg = f"Unexpected dist name: {filename}"
+    raise ValueError(msg)
+
+
+def display_for(filename: str) -> str:
+    """Strip the `pillow-{version}-` prefix for compact table display."""
+    if m := WHEEL_RE.match(filename):
+        build = f"{m['build']}-" if m["build"] else ""
+        return f"{build}{m['python']}-{m['abi']}-{m['platform']}.whl"
+    if SDIST_RE.match(filename):
+        return "sdist (.tar.gz)"
+    return filename
+
+
+def fetch_pypi_sizes() -> tuple[str, dict[str, tuple[str, int]]]:
+    """Return (version, {key: (filename, size)}) for the latest PyPI release."""
+    with urllib.request.urlopen(PYPI_JSON_URL) as response:
+        data = json.load(response)
+    version = data["info"]["version"]
+    sizes: dict[str, tuple[str, int]] = {}
+    for entry in data.get("urls", []):
+        filename = entry["filename"]
+        key = key_for(filename)
+        sizes[key] = (filename, entry["size"])
+    return version, sizes
+
+
+def collect_local_sizes(dist_dir: Path) -> dict[str, tuple[str, int]]:
+    sizes: dict[str, tuple[str, int]] = {}
+    for path in sorted(dist_dir.iterdir()):
+        if not path.is_file():
+            continue
+        key = key_for(path.name)
+        sizes[key] = (path.name, path.stat().st_size)
+    return sizes
+
+
+def human(n: int | None) -> str:
+    if n is None:
+        return "n/a"
+    return humanize.naturalsize(n)
+
+
+def pct_change(before: int | None, after: int | None) -> str:
+    if before is None or after is None:
+        return "n/a"
+    delta = 0 if before == 0 else (after - before) / before * 100
+    return f"{delta:+.2f}%"
+
+
+def pct_severity(text: str) -> dict[str, str] | None:
+    """Return status indicators based on the change percent."""
+    if text == "n/a":
+        return None
+    pct = float(text.rstrip("%"))
+    if pct >= 5:
+        return {"color": "red", "emoji": "🔴"}
+    if pct > 0:
+        return {"color": "yellow", "emoji": "🟡"}
+    else:
+        return {"color": "green", "emoji": "🟢"}
+
+
+def render_table(
+    baseline_label: str,
+    baseline_sizes: dict[str, tuple[str, int]],
+    local_sizes: dict[str, tuple[str, int]],
+    *,
+    markdown: bool,
+) -> str:
+    table = PrettyTable()
+    table.set_style(TableStyle.MARKDOWN if markdown else TableStyle.SINGLE_BORDER)
+    table.field_names = ["File", "Size before", "Size now", "Change"]
+    table.align = "r"
+    table.align["File"] = "l"
+
+    def style(cells: list[str], role: str) -> list[str]:
+        severity = pct_severity(cells[3])
+        if markdown:
+            if severity:
+                cells[3] = f"{severity['emoji']} {cells[3]}"
+            if role == "orphan":
+                return [f"*{c}*" for c in cells]
+            if role == "summary":
+                return [f"**{c}**" for c in cells]
+            return cells
+
+        if role == "orphan":
+            return [colored(c, "dark_grey") for c in cells]
+
+        bold_attrs = ["bold"] if role == "summary" else []
+        if bold_attrs:
+            cells[:3] = [colored(c, attrs=bold_attrs) for c in cells[:3]]
+        if severity:
+            cells[3] = colored(cells[3], severity["color"], attrs=bold_attrs)
+        elif bold_attrs:
+            cells[3] = colored(cells[3], attrs=bold_attrs)
+        return cells
+
+    keys = list(set(baseline_sizes) | set(local_sizes))
+    # Put sdist first for readability
+    keys.sort(key=lambda k: (k != "sdist", k))
+
+    wheel_before = []
+    wheel_after = []
+    total_before = []
+    total_after = []
+    for key in keys:
+        baseline_entry = baseline_sizes.get(key)
+        local_entry = local_sizes.get(key)
+        display_name = display_for((local_entry or baseline_entry)[0])
+        before = baseline_entry[1] if baseline_entry else None
+        after = local_entry[1] if local_entry else None
+        if after is None:
+            # Removed since baseline: ignore in totals
+            role = "orphan"
+        else:
+            # Present locally (in both, or newly added): count in totals
+            total_after.append(after)
+            if before is not None:
+                total_before.append(before)
+            if key != "sdist":
+                wheel_after.append(after)
+                if before is not None:
+                    wheel_before.append(before)
+            role = "data"
+        cells = [
+            display_name,
+            human(before),
+            human(after),
+            pct_change(before, after),
+        ]
+        table.add_row(style(cells, role))
+
+    if not markdown:
+        table.add_divider()
+
+    if wheel_after:
+        avg_before = sum(wheel_before) // len(wheel_before) if wheel_before else None
+        table.add_row(
+            style(
+                [
+                    f"wheel average ({len(wheel_after)} wheels)",
+                    human(avg_before),
+                    human(sum(wheel_after) // len(wheel_after)),
+                    pct_change(avg_before, sum(wheel_after) // len(wheel_after)),
+                ],
+                "summary",
+            )
+        )
+        table.add_row(
+            style(
+                [
+                    f"wheel total ({len(wheel_after)} wheels)",
+                    human(sum(wheel_before)),
+                    human(sum(wheel_after)),
+                    pct_change(sum(wheel_before), sum(wheel_after)),
+                ],
+                "summary",
+            ),
+            divider=not markdown,
+        )
+
+    if total_after:
+        table.add_row(
+            style(
+                [
+                    f"artifacts total ({len(total_after)} artifacts)",
+                    human(sum(total_before)),
+                    human(sum(total_after)),
+                    pct_change(sum(total_before), sum(total_after)),
+                ],
+                "summary",
+            )
+        )
+
+    title = f"## Dist size comparison vs {baseline_label}"
+    if not markdown:
+        title = colored(title, attrs=["bold"])
+    return f"{title}\n\n{table.get_string()}\n"
+
+
+def main() -> int:
+    parser = argparse.ArgumentParser(
+        description=__doc__, formatter_class=argparse.ArgumentDefaultsHelpFormatter
+    )
+    parser.add_argument(
+        "dist_dir",
+        type=Path,
+        help="Directory containing newly-built wheels and sdist",
+    )
+    args = parser.parse_args()
+
+    if not args.dist_dir.is_dir():
+        print(f"error: {args.dist_dir} is not a directory", file=sys.stderr)
+        return 1
+
+    baseline_version, baseline_sizes = fetch_pypi_sizes()
+    baseline_label = f"Pillow {baseline_version} on PyPI"
+
+    local_sizes = collect_local_sizes(args.dist_dir)
+
+    print(render_table(baseline_label, baseline_sizes, local_sizes, markdown=False))
+
+    if summary_path := os.environ.get("GITHUB_STEP_SUMMARY"):
+        with open(summary_path, "a", encoding="utf-8") as f:
+            f.write(
+                render_table(baseline_label, baseline_sizes, local_sizes, markdown=True)
+            )
+
+    return 0
+
+
+if __name__ == "__main__":
+    sys.exit(main())

.github/dependencies.json

@@ -0,0 +1,19 @@
+{
+  "brotli": "1.2.0",
+  "bzip2": "1.0.8",
+  "freetype": "2.14.3",
+  "fribidi": "1.0.16",
+  "harfbuzz": "14.2.0",
+  "jpegturbo": "3.1.4.1",
+  "lcms2": "2.19",
+  "libavif": "1.4.1",
+  "libimagequant": "4.4.1",
+  "libpng": "1.6.58",
+  "libwebp": "1.6.0",
+  "libxcb": "1.17.0",
+  "openjpeg": "2.5.4",
+  "tiff": "4.7.1",
+  "xz": "5.8.3",
+  "zlib-ng": "2.3.3",
+  "zstd": "1.5.7"
+}

.github/generate-sbom.py

@@ -0,0 +1,560 @@
+#!/usr/bin/env python3
+"""Generate a CycloneDX 1.7 SBOM for Pillow's C extensions and their
+vendored/optional native library dependencies.
+
+Usage:
+    python3 .github/generate-sbom.py [output-file]
+
+Output defaults to pillow-{version}.cdx.json in the current directory.
+"""
+
+from __future__ import annotations
+
+import argparse
+import base64
+import datetime as dt
+import difflib
+import hashlib
+import json
+import urllib.request
+import uuid
+from pathlib import Path
+
+
+def get_version() -> str:
+    version_file = Path(__file__).parent.parent / "src" / "PIL" / "_version.py"
+    return version_file.read_text(encoding="utf-8").split('"')[1]
+
+
+def load_dep_versions() -> dict[str, str]:
+    deps_file = Path(__file__).parent / "dependencies.json"
+    return json.loads(deps_file.read_text(encoding="utf-8"))
+
+
+def sha256_file(path: Path) -> str:
+    return hashlib.sha256(path.read_bytes()).hexdigest()
+
+
+def upstream_diff_b64(
+    upstream_url: str,
+    upstream_display: bytes,
+    local_path: Path,
+    local_display: bytes,
+) -> str:
+    """
+    Fetch an upstream file and return a base64-encoded unified diff vs the local copy.
+    """
+    with urllib.request.urlopen(upstream_url) as resp:
+        upstream_text = resp.read()
+    local_text = local_path.read_bytes()
+    diff_lines = difflib.diff_bytes(
+        difflib.unified_diff,
+        upstream_text.splitlines(keepends=True),
+        local_text.splitlines(keepends=True),
+        fromfile=b"a/" + upstream_display,
+        tofile=b"b/" + local_display,
+    )
+    return base64.b64encode(b"".join(diff_lines)).decode()
+
+
+def generate(version: str) -> dict:
+    serial = str(uuid.uuid4())
+    now = dt.datetime.now(dt.timezone.utc).strftime("%Y-%m-%dT%H:%M:%SZ")
+    purl = f"pkg:pypi/pillow@{version}"
+    root = Path(__file__).parent.parent
+    thirdparty = root / "src" / "thirdparty"
+    versions = load_dep_versions()
+
+    metadata_component = {
+        "bom-ref": purl,
+        "type": "library",
+        "name": "Pillow",
+        "version": version,
+        "description": "Python Imaging Library (fork)",
+        "licenses": [{"license": {"id": "MIT-CMU"}}],
+        "purl": purl,
+        "externalReferences": [
+            {"type": "website", "url": "https://python-pillow.github.io"},
+            {"type": "vcs", "url": "https://github.com/python-pillow/Pillow"},
+            {"type": "documentation", "url": "https://pillow.readthedocs.io"},
+            {
+                "type": "security-contact",
+                "url": "https://github.com/python-pillow/Pillow/security/policy",
+            },
+        ],
+    }
+
+    c_extensions = [
+        ("PIL._avif", "AVIF image format extension"),
+        (
+            "PIL._imaging",
+            "Core image processing extension "
+            "(decode, encode, map, display, outline, path, libImaging)",
+        ),
+        ("PIL._imagingcms", "LittleCMS2 colour management extension"),
+        ("PIL._imagingft", "FreeType font rendering extension"),
+        ("PIL._imagingmath", "Image math operations extension"),
+        ("PIL._imagingmorph", "Image morphology extension"),
+        ("PIL._imagingtk", "Tk/Tcl display extension"),
+        ("PIL._webp", "WebP image format extension"),
+    ]
+
+    ext_components = [
+        {
+            "bom-ref": f"{purl}#c-ext/{name}",
+            "type": "library",
+            "name": name,
+            "version": version,
+            "description": desc,
+            "licenses": [{"license": {"id": "MIT-CMU"}}],
+            "purl": f"{purl}#c-ext/{name}",
+        }
+        for name, desc in c_extensions
+    ]
+
+    vendored_components = [
+        {
+            "bom-ref": f"{purl}#thirdparty/fribidi-shim",
+            "type": "library",
+            "name": "fribidi-shim",
+            "version": "1.x",
+            "description": "FriBiDi runtime-loading shim "
+            "(vendored in src/thirdparty/fribidi-shim/); "
+            "loads libfribidi dynamically",
+            "licenses": [{"license": {"id": "LGPL-2.1-or-later"}}],
+            "hashes": [
+                {
+                    "alg": "SHA-256",
+                    "content": sha256_file(thirdparty / "fribidi-shim" / "fribidi.c"),
+                }
+            ],
+            "pedigree": {
+                "notes": "Pillow-authored shim; not taken from an upstream project."
+            },
+            "externalReferences": [
+                {"type": "website", "url": "https://github.com/fribidi/fribidi"},
+            ],
+        },
+        {
+            "bom-ref": "pkg:github/python/pythoncapi-compat",
+            "type": "library",
+            "name": "pythoncapi_compat",
+            "description": "Backport header for new CPython C-API functions "
+            "(vendored in src/thirdparty/pythoncapi_compat.h)",
+            "licenses": [{"license": {"id": "0BSD"}}],
+            "hashes": [
+                {
+                    "alg": "SHA-256",
+                    "content": sha256_file(thirdparty / "pythoncapi_compat.h"),
+                }
+            ],
+            "pedigree": {
+                "notes": "Vendored unmodified from upstream python/pythoncapi-compat."
+            },
+            "externalReferences": [
+                {
+                    "type": "vcs",
+                    "url": "https://github.com/python/pythoncapi-compat",
+                },
+            ],
+        },
+        {
+            "bom-ref": f"{purl}#thirdparty/raqm",
+            "type": "library",
+            "name": "raqm",
+            "version": "0.10.5",
+            "description": "Complex text layout library "
+            "(vendored in src/thirdparty/raqm/)",
+            "licenses": [{"license": {"id": "MIT"}}],
+            "hashes": [
+                {
+                    "alg": "SHA-256",
+                    "content": sha256_file(thirdparty / "raqm" / "raqm.c"),
+                }
+            ],
+            "pedigree": {
+                "ancestors": [
+                    {
+                        "bom-ref": "pkg:github/HOST-Oman/libraqm@0.10.5#upstream",
+                        "type": "library",
+                        "name": "raqm",
+                        "version": "0.10.5",
+                        "purl": "pkg:github/HOST-Oman/libraqm@0.10.5",
+                        "externalReferences": [
+                            {
+                                "type": "distribution",
+                                "url": "https://github.com/HOST-Oman/libraqm/releases/tag/v0.10.5",
+                            }
+                        ],
+                    }
+                ],
+                "patches": [
+                    {
+                        "type": "unofficial",
+                        "diff": {
+                            "text": {
+                                # raqm-version.h.in → raqm-version.h:
+                                # template @RAQM_VERSION_*@ placeholders replaced
+                                # with literal 0.10.5 values; filename changed to
+                                # drop the .in suffix; minor indentation fix.
+                                "content": upstream_diff_b64(
+                                    "https://raw.githubusercontent.com/HOST-Oman/libraqm/v0.10.5/src/raqm-version.h.in",
+                                    b"src/raqm-version.h.in",
+                                    thirdparty / "raqm" / "raqm-version.h",
+                                    b"src/raqm-version.h",
+                                ),
+                                "encoding": "base64",
+                            }
+                        },
+                    },
+                    {
+                        "type": "unofficial",
+                        "diff": {
+                            "text": {
+                                # raqm.c: wrap the <fribidi.h> include in an
+                                # #ifdef HAVE_FRIBIDI_SYSTEM guard so that when
+                                # building without a system FriBiDi Pillow's own
+                                # fribidi-shim is used instead.
+                                "content": upstream_diff_b64(
+                                    "https://raw.githubusercontent.com/HOST-Oman/libraqm/v0.10.5/src/raqm.c",
+                                    b"src/raqm.c",
+                                    thirdparty / "raqm" / "raqm.c",
+                                    b"src/raqm.c",
+                                ),
+                                "encoding": "base64",
+                            }
+                        },
+                    },
+                ],
+                "notes": (
+                    "Vendored from upstream HOST-Oman/libraqm v0.10.5 with two "
+                    "Pillow-specific modifications: (1) raqm-version.h.in was "
+                    "pre-processed into raqm-version.h with version placeholders "
+                    "replaced by literal values; (2) raqm.c wraps the <fribidi.h> "
+                    "include in an #ifdef HAVE_FRIBIDI_SYSTEM guard so Pillow's "
+                    "bundled fribidi-shim is used when a system FriBiDi is absent."
+                ),
+            },
+            "externalReferences": [
+                {
+                    "type": "vcs",
+                    "url": "https://github.com/python-pillow/Pillow/tree/main/src/thirdparty/raqm",
+                },
+            ],
+        },
+    ]
+
+    native_deps = [
+        {
+            "bom-ref": "pkg:generic/freetype2",
+            "type": "library",
+            "name": "FreeType",
+            "version": versions["freetype"],
+            "scope": "optional",
+            "description": "Font rendering (optional, used by PIL._imagingft). "
+            "Required for text/font support.",
+            "licenses": [{"license": {"id": "FTL"}}],
+            "externalReferences": [
+                {"type": "website", "url": "https://freetype.org"},
+                {
+                    "type": "distribution",
+                    "url": "https://download.savannah.gnu.org/releases/freetype/",
+                },
+            ],
+        },
+        {
+            "bom-ref": "pkg:generic/fribidi",
+            "type": "library",
+            "name": "FriBiDi",
+            "version": versions["fribidi"],
+            "scope": "optional",
+            "description": "Unicode bidi algorithm library (optional, "
+            "loaded at runtime by fribidi-shim).",
+            "licenses": [{"license": {"id": "LGPL-2.1-or-later"}}],
+            "externalReferences": [
+                {"type": "website", "url": "https://github.com/fribidi/fribidi"},
+                {
+                    "type": "distribution",
+                    "url": "https://github.com/fribidi/fribidi/releases",
+                },
+            ],
+        },
+        {
+            "bom-ref": "pkg:generic/harfbuzz",
+            "type": "library",
+            "name": "HarfBuzz",
+            "version": versions["harfbuzz"],
+            "scope": "optional",
+            "description": "Text shaping (optional, required by libraqm "
+            "for complex text layout).",
+            "licenses": [{"license": {"id": "MIT"}}],
+            "externalReferences": [
+                {"type": "website", "url": "https://harfbuzz.github.io"},
+                {
+                    "type": "distribution",
+                    "url": "https://github.com/harfbuzz/harfbuzz/releases",
+                },
+            ],
+        },
+        {
+            "bom-ref": "pkg:generic/libavif",
+            "type": "library",
+            "name": "libavif",
+            "version": versions["libavif"],
+            "scope": "optional",
+            "description": "AVIF codec (optional, used by PIL._avif).",
+            "licenses": [{"license": {"id": "BSD-2-Clause"}}],
+            "externalReferences": [
+                {"type": "website", "url": "https://github.com/AOMediaCodec/libavif"},
+                {
+                    "type": "distribution",
+                    "url": "https://github.com/AOMediaCodec/libavif/releases",
+                },
+            ],
+        },
+        {
+            "bom-ref": "pkg:generic/libimagequant",
+            "type": "library",
+            "name": "libimagequant",
+            "version": versions["libimagequant"],
+            "scope": "optional",
+            "description": "Improved colour quantization (optional).",
+            "licenses": [{"license": {"id": "GPL-3.0-or-later"}}],
+            "externalReferences": [
+                {"type": "website", "url": "https://pngquant.org/lib/"},
+                {
+                    "type": "distribution",
+                    "url": "https://github.com/ImageOptim/libimagequant/tags",
+                },
+            ],
+        },
+        {
+            "bom-ref": "pkg:generic/libjpeg",
+            "type": "library",
+            "name": "libjpeg / libjpeg-turbo",
+            "version": versions["jpegturbo"],
+            "description": "JPEG codec (required by default; disable with "
+            "-C jpeg=disable).",
+            "licenses": [
+                {"license": {"id": "IJG"}},
+                {"license": {"id": "BSD-3-Clause"}},
+            ],
+            "externalReferences": [
+                {"type": "website", "url": "https://ijg.org"},
+                {"type": "website", "url": "https://libjpeg-turbo.org"},
+                {
+                    "type": "distribution",
+                    "url": "https://github.com/libjpeg-turbo/libjpeg-turbo/releases",
+                },
+            ],
+        },
+        {
+            "bom-ref": "pkg:generic/libtiff",
+            "type": "library",
+            "name": "libtiff",
+            "version": versions["tiff"],
+            "scope": "optional",
+            "description": "TIFF codec (optional).",
+            "licenses": [{"license": {"id": "libtiff"}}],
+            "externalReferences": [
+                {"type": "website", "url": "https://libtiff.gitlab.io/libtiff/"},
+                {
+                    "type": "distribution",
+                    "url": "https://download.osgeo.org/libtiff/",
+                },
+            ],
+        },
+        {
+            "bom-ref": "pkg:generic/libwebp",
+            "type": "library",
+            "name": "libwebp",
+            "version": versions["libwebp"],
+            "scope": "optional",
+            "description": "WebP codec (optional, used by PIL._webp).",
+            "licenses": [{"license": {"id": "BSD-3-Clause"}}],
+            "externalReferences": [
+                {
+                    "type": "website",
+                    "url": "https://chromium.googlesource.com/webm/libwebp",
+                },
+                {
+                    "type": "distribution",
+                    "url": "https://chromium.googlesource.com/webm/libwebp",
+                },
+            ],
+        },
+        {
+            "bom-ref": "pkg:generic/libxcb",
+            "type": "library",
+            "name": "libxcb",
+            "version": versions["libxcb"],
+            "scope": "optional",
+            "description": "X11 screen-grab support (optional, "
+            "used by PIL._imaging on macOS and Linux).",
+            "licenses": [{"license": {"id": "X11"}}],
+            "externalReferences": [
+                {"type": "website", "url": "https://xcb.freedesktop.org"},
+                {
+                    "type": "distribution",
+                    "url": "https://xcb.freedesktop.org/dist/",
+                },
+            ],
+        },
+        {
+            "bom-ref": "pkg:generic/littlecms2",
+            "type": "library",
+            "name": "Little CMS 2",
+            "version": versions["lcms2"],
+            "scope": "optional",
+            "description": "Colour management (optional, used by PIL._imagingcms).",
+            "licenses": [{"license": {"id": "MIT"}}],
+            "externalReferences": [
+                {"type": "website", "url": "https://www.littlecms.com"},
+                {
+                    "type": "distribution",
+                    "url": "https://github.com/mm2/Little-CMS/releases",
+                },
+            ],
+        },
+        {
+            "bom-ref": "pkg:generic/openjpeg",
+            "type": "library",
+            "name": "OpenJPEG",
+            "version": versions["openjpeg"],
+            "scope": "optional",
+            "description": "JPEG 2000 codec (optional).",
+            "licenses": [{"license": {"id": "BSD-2-Clause"}}],
+            "externalReferences": [
+                {"type": "website", "url": "https://www.openjpeg.org"},
+                {
+                    "type": "distribution",
+                    "url": "https://github.com/uclouvain/openjpeg/releases",
+                },
+            ],
+        },
+        {
+            "bom-ref": "pkg:pypi/pybind11",
+            "type": "library",
+            "name": "pybind11",
+            "scope": "excluded",
+            "description": "Parallel C compilation library (build-time dependency).",
+            "licenses": [{"license": {"id": "BSD-3-Clause"}}],
+            "externalReferences": [
+                {"type": "website", "url": "https://pybind11.readthedocs.io"},
+                {
+                    "type": "distribution",
+                    "url": "https://github.com/pybind/pybind11/releases",
+                },
+            ],
+        },
+        {
+            "bom-ref": "pkg:generic/zlib",
+            "type": "library",
+            "name": "zlib",
+            "version": versions["zlib-ng"],
+            "description": "Deflate/PNG compression (required by default; "
+            "disable with -C zlib=disable).",
+            "licenses": [{"license": {"id": "Zlib"}}],
+            "externalReferences": [
+                {"type": "website", "url": "https://zlib.net"},
+                {"type": "distribution", "url": "https://zlib.net"},
+            ],
+        },
+    ]
+
+    dependencies = [
+        {
+            "ref": purl,
+            "dependsOn": [e["bom-ref"] for e in ext_components],
+        },
+        {
+            "ref": f"{purl}#c-ext/PIL._avif",
+            "dependsOn": ["pkg:generic/libavif"],
+        },
+        {
+            "ref": f"{purl}#c-ext/PIL._imaging",
+            "dependsOn": [
+                "pkg:generic/libimagequant",
+                "pkg:generic/libjpeg",
+                "pkg:generic/libtiff",
+                "pkg:generic/libxcb",
+                "pkg:generic/openjpeg",
+                "pkg:generic/zlib",
+            ],
+        },
+        {
+            "ref": f"{purl}#c-ext/PIL._imagingcms",
+            "dependsOn": ["pkg:generic/littlecms2"],
+        },
+        {
+            "ref": f"{purl}#c-ext/PIL._imagingft",
+            "dependsOn": [
+                "pkg:generic/freetype2",
+                "pkg:generic/fribidi",
+                "pkg:generic/harfbuzz",
+                f"{purl}#thirdparty/fribidi-shim",
+                f"{purl}#thirdparty/raqm",
+            ],
+        },
+        {
+            "ref": f"{purl}#c-ext/PIL._webp",
+            "dependsOn": ["pkg:generic/libwebp"],
+        },
+        {
+            "ref": f"{purl}#thirdparty/raqm",
+            "dependsOn": [
+                "pkg:generic/harfbuzz",
+                f"{purl}#thirdparty/fribidi-shim",
+            ],
+        },
+    ]
+
+    return {
+        "$schema": "http://cyclonedx.org/schema/bom-1.7.schema.json",
+        "bomFormat": "CycloneDX",
+        "specVersion": "1.7",
+        "serialNumber": f"urn:uuid:{serial}",
+        "version": 1,
+        "metadata": {
+            "timestamp": now,
+            "lifecycles": [{"phase": "build"}],
+            "tools": {
+                "components": [
+                    {
+                        "type": "application",
+                        "name": "generate-sbom.py",
+                        "group": "pillow",
+                    }
+                ]
+            },
+            "component": metadata_component,
+        },
+        "components": ext_components + vendored_components + native_deps,
+        "dependencies": dependencies,
+    }
+
+
+def main() -> None:
+    version = get_version()
+
+    parser = argparse.ArgumentParser(
+        description=__doc__, formatter_class=argparse.ArgumentDefaultsHelpFormatter
+    )
+    parser.add_argument(
+        "output",
+        nargs="?",
+        type=Path,
+        default=Path(f"pillow-{version}.cdx.json"),
+        help="output file",
+    )
+    args = parser.parse_args()
+
+    sbom = generate(version)
+    args.output.write_text(json.dumps(sbom, indent=2) + "\n", encoding="utf-8")
+    print(
+        f"Wrote {args.output} (Pillow {version}, {len(sbom['components'])} components)"
+    )
+
+
+if __name__ == "__main__":
+    main()

.github/mergify.yml

@@ -8,8 +8,6 @@ pull_request_rules:
       - status-success=Docker Test Successful
       - status-success=Windows Test Successful
       - status-success=MinGW
-      - status-success=Cygwin Test Successful
-      - status-success=continuous-integration/appveyor/pr
     actions:
       merge:
         method: merge

.github/release-drafter.yml

@@ -3,18 +3,19 @@ tag-template: "$NEXT_MINOR_VERSION"
 change-template: '- $TITLE #$NUMBER [@$AUTHOR]'
 
 categories:
-  - title: "Dependencies"
-    label: "Dependency"
+  - title: "Removals"
+    label: "Removal"
   - title: "Deprecations"
     label: "Deprecation"
   - title: "Documentation"
     label: "Documentation"
-  - title: "Removals"
-    label: "Removal"
+  - title: "Dependencies"
+    label: "Dependency"
   - title: "Testing"
     label: "Testing"
   - title: "Type hints"
     label: "Type hints"
+  - title: "Other changes"
 
 exclude-labels:
   - "changelog: skip"
@@ -23,6 +24,4 @@ template: |
 
   https://pillow.readthedocs.io/en/stable/releasenotes/$NEXT_MINOR_VERSION.html
 
-  ## Changes
-
   $CHANGES

.github/renovate.json

@@ -1,17 +1,175 @@
 {
     "$schema": "https://docs.renovatebot.com/renovate-schema.json",
     "extends": [
-        "config:base"
+        "config:recommended"
     ],
     "labels": [
         "Dependency"
     ],
+    "minimumReleaseAge": "7 days",
+    "prCreation": "not-pending",
+    "schedule": [
+        "* * 3 * *"
+    ],
+    "customManagers": [
+        {
+            "customType": "regex",
+            "managerFilePatterns": ["/^\\.github/dependencies\\.json$/"],
+            "matchStrings": ["\"brotli\":\\s*\"(?<currentValue>\\d+[^\"]*)\""],
+            "depNameTemplate": "brotli",
+            "packageNameTemplate": "google/brotli",
+            "datasourceTemplate": "github-releases",
+            "extractVersionTemplate": "^v(?<version>.+)$"
+        },
+        {
+            "customType": "regex",
+            "managerFilePatterns": ["/^\\.github/dependencies\\.json$/"],
+            "matchStrings": ["\"bzip2\":\\s*\"(?<currentValue>\\d+[^\"]*)\""],
+            "depNameTemplate": "bzip2",
+            "packageNameTemplate": "bzip2/bzip2",
+            "datasourceTemplate": "gitlab-tags",
+            "extractVersionTemplate": "^bzip2-(?<version>.+)$"
+        },
+        {
+            "customType": "regex",
+            "managerFilePatterns": ["/^\\.github/dependencies\\.json$/"],
+            "matchStrings": ["\"freetype\":\\s*\"(?<currentValue>\\d+[^\"]*)\""],
+            "depNameTemplate": "freetype",
+            "packageNameTemplate": "freetype/freetype",
+            "datasourceTemplate": "gitlab-tags",
+            "registryUrlTemplate": "https://gitlab.freedesktop.org",
+            "extractVersionTemplate": "^VER-(?<version>[\\d-]+)$",
+            "versioningTemplate": "regex:^(?<major>\\d+)[.-](?<minor>\\d+)[.-](?<patch>\\d+)$"
+        },
+        {
+            "customType": "regex",
+            "managerFilePatterns": ["/^\\.github/dependencies\\.json$/"],
+            "matchStrings": ["\"fribidi\":\\s*\"(?<currentValue>\\d+[^\"]*)\""],
+            "depNameTemplate": "fribidi",
+            "packageNameTemplate": "fribidi/fribidi",
+            "datasourceTemplate": "github-releases",
+            "extractVersionTemplate": "^v(?<version>.+)$"
+        },
+        {
+            "customType": "regex",
+            "managerFilePatterns": ["/^\\.github/dependencies\\.json$/"],
+            "matchStrings": ["\"harfbuzz\":\\s*\"(?<currentValue>\\d+[^\"]*)\""],
+            "depNameTemplate": "harfbuzz",
+            "packageNameTemplate": "harfbuzz/harfbuzz",
+            "datasourceTemplate": "github-releases"
+        },
+        {
+            "customType": "regex",
+            "managerFilePatterns": ["/^\\.github/dependencies\\.json$/"],
+            "matchStrings": ["\"jpegturbo\":\\s*\"(?<currentValue>\\d+[^\"]*)\""],
+            "depNameTemplate": "jpegturbo",
+            "packageNameTemplate": "libjpeg-turbo/libjpeg-turbo",
+            "datasourceTemplate": "github-releases"
+        },
+        {
+            "customType": "regex",
+            "managerFilePatterns": ["/^\\.github/dependencies\\.json$/"],
+            "matchStrings": ["\"lcms2\":\\s*\"(?<currentValue>\\d+[^\"]*)\""],
+            "depNameTemplate": "lcms2",
+            "packageNameTemplate": "mm2/Little-CMS",
+            "datasourceTemplate": "github-releases",
+            "extractVersionTemplate": "^lcms(?<version>.+)$"
+        },
+        {
+            "customType": "regex",
+            "managerFilePatterns": ["/^\\.github/dependencies\\.json$/"],
+            "matchStrings": ["\"libavif\":\\s*\"(?<currentValue>\\d+[^\"]*)\""],
+            "depNameTemplate": "libavif",
+            "packageNameTemplate": "AOMediaCodec/libavif",
+            "datasourceTemplate": "github-releases",
+            "extractVersionTemplate": "^v(?<version>.+)$"
+        },
+        {
+            "customType": "regex",
+            "managerFilePatterns": ["/^\\.github/dependencies\\.json$/"],
+            "matchStrings": ["\"libimagequant\":\\s*\"(?<currentValue>\\d+[^\"]*)\""],
+            "depNameTemplate": "libimagequant",
+            "packageNameTemplate": "ImageOptim/libimagequant",
+            "datasourceTemplate": "github-tags"
+        },
+        {
+            "customType": "regex",
+            "managerFilePatterns": ["/^\\.github/dependencies\\.json$/"],
+            "matchStrings": ["\"libpng\":\\s*\"(?<currentValue>\\d+[^\"]*)\""],
+            "depNameTemplate": "libpng",
+            "packageNameTemplate": "pnggroup/libpng",
+            "datasourceTemplate": "github-tags",
+            "extractVersionTemplate": "^v(?<version>.+)$"
+        },
+        {
+            "customType": "regex",
+            "managerFilePatterns": ["/^\\.github/dependencies\\.json$/"],
+            "matchStrings": ["\"libwebp\":\\s*\"(?<currentValue>\\d+[^\"]*)\""],
+            "depNameTemplate": "libwebp",
+            "packageNameTemplate": "webmproject/libwebp",
+            "datasourceTemplate": "github-tags",
+            "extractVersionTemplate": "^v(?<version>.+)$"
+        },
+        {
+            "customType": "regex",
+            "managerFilePatterns": ["/^\\.github/dependencies\\.json$/"],
+            "matchStrings": ["\"libxcb\":\\s*\"(?<currentValue>\\d+[^\"]*)\""],
+            "depNameTemplate": "libxcb",
+            "packageNameTemplate": "xorg/lib/libxcb",
+            "datasourceTemplate": "gitlab-tags",
+            "registryUrlTemplate": "https://gitlab.freedesktop.org",
+            "extractVersionTemplate": "^libxcb-(?<version>.+)$"
+        },
+        {
+            "customType": "regex",
+            "managerFilePatterns": ["/^\\.github/dependencies\\.json$/"],
+            "matchStrings": ["\"openjpeg\":\\s*\"(?<currentValue>\\d+[^\"]*)\""],
+            "depNameTemplate": "openjpeg",
+            "packageNameTemplate": "uclouvain/openjpeg",
+            "datasourceTemplate": "github-releases",
+            "extractVersionTemplate": "^v(?<version>.+)$"
+        },
+        {
+            "customType": "regex",
+            "managerFilePatterns": ["/^\\.github/dependencies\\.json$/"],
+            "matchStrings": ["\"tiff\":\\s*\"(?<currentValue>\\d+[^\"]*)\""],
+            "depNameTemplate": "tiff",
+            "packageNameTemplate": "libtiff/libtiff",
+            "datasourceTemplate": "gitlab-tags",
+            "extractVersionTemplate": "^v(?<version>.+)$"
+        },
+        {
+            "customType": "regex",
+            "managerFilePatterns": ["/^\\.github/dependencies\\.json$/"],
+            "matchStrings": ["\"xz\":\\s*\"(?<currentValue>\\d+[^\"]*)\""],
+            "depNameTemplate": "xz",
+            "packageNameTemplate": "tukaani-project/xz",
+            "datasourceTemplate": "github-releases",
+            "extractVersionTemplate": "^v(?<version>.+)$"
+        },
+        {
+            "customType": "regex",
+            "managerFilePatterns": ["/^\\.github/dependencies\\.json$/"],
+            "matchStrings": ["\"zlib-ng\":\\s*\"(?<currentValue>\\d+[^\"]*)\""],
+            "depNameTemplate": "zlib-ng",
+            "packageNameTemplate": "zlib-ng/zlib-ng",
+            "datasourceTemplate": "github-releases"
+        },
+        {
+            "customType": "regex",
+            "managerFilePatterns": ["/^\\.github/dependencies\\.json$/"],
+            "matchStrings": ["\"zstd\":\\s*\"(?<currentValue>\\d+[^\"]*)\""],
+            "depNameTemplate": "zstd",
+            "packageNameTemplate": "facebook/zstd",
+            "datasourceTemplate": "github-releases",
+            "extractVersionTemplate": "^v(?<version>.+)$"
+        }
+    ],
     "packageRules": [
         {
             "groupName": "github-actions",
             "matchManagers": ["github-actions"],
-            "separateMajorMinor": "false"
+            "separateMajorMinor": false
         }
-    ],
-    "schedule": ["on the 3rd day of the month"]
+    ]
 }

.github/workflows/Brewfile

@@ -0,0 +1,13 @@
+brew "aom"
+brew "dav1d"
+brew "freetype"
+brew "ghostscript"
+brew "jpeg-turbo"
+brew "libimagequant"
+brew "libraqm"
+brew "libtiff"
+brew "little-cms2"
+brew "openjpeg"
+brew "rav1e"
+brew "svt-av1"
+brew "webp"

.github/workflows/cifuzz.yml

@@ -4,15 +4,14 @@ on:
   push:
     branches:
       - "**"
-    paths:
+    paths: &paths
+      - ".github/dependencies.json"
       - ".github/workflows/cifuzz.yml"
+      - ".github/workflows/wheels-dependencies.sh"
       - "**.c"
       - "**.h"
   pull_request:
-    paths:
-      - ".github/workflows/cifuzz.yml"
-      - "**.c"
-      - "**.h"
+    paths: *paths
   workflow_dispatch:
 
 permissions:
@@ -22,33 +21,36 @@ concurrency:
   group: ${{ github.workflow }}-${{ github.ref }}
   cancel-in-progress: true
 
+env:
+  FORCE_COLOR: 1
+
 jobs:
   Fuzzing:
     runs-on: ubuntu-latest
     steps:
     - name: Build Fuzzers
       id: build
-      uses: google/oss-fuzz/infra/cifuzz/actions/build_fuzzers@master
+      uses: google/oss-fuzz/infra/cifuzz/actions/build_fuzzers@d87225267726cf7ce1a3e17cf103c5ac943c4f05 # master
       with:
         oss-fuzz-project-name: 'pillow'
         language: python
         dry-run: false
     - name: Run Fuzzers
       id: run
-      uses: google/oss-fuzz/infra/cifuzz/actions/run_fuzzers@master
+      uses: google/oss-fuzz/infra/cifuzz/actions/run_fuzzers@d87225267726cf7ce1a3e17cf103c5ac943c4f05 # master
       with:
         oss-fuzz-project-name: 'pillow'
         fuzz-seconds: 600
         language: python
         dry-run: false
     - name: Upload New Crash
-      uses: actions/upload-artifact@v4
+      uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a # v7.0.1
       if: failure() && steps.build.outcome == 'success'
       with:
         name: artifacts
         path: ./out/artifacts
     - name: Upload Legacy Crash
-      uses: actions/upload-artifact@v4
+      uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a # v7.0.1
       if: steps.run.outcome == 'success'
       with:
         name: crash

.github/workflows/docs.yml

@@ -4,15 +4,12 @@ on:
   push:
     branches:
       - "**"
-    paths:
+    paths: &paths
       - ".github/workflows/docs.yml"
       - "docs/**"
       - "src/PIL/**"
   pull_request:
-    paths:
-      - ".github/workflows/docs.yml"
-      - "docs/**"
-      - "src/PIL/**"
+    paths: *paths
   workflow_dispatch:
 
 permissions:
@@ -32,10 +29,12 @@ jobs:
     name: Docs
 
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+      with:
+        persist-credentials: false
 
     - name: Set up Python
-      uses: actions/setup-python@v5
+      uses: actions/setup-python@a309ff8b426b58ec0e2a45f0f869d46889d02405 # v6.2.0
       with:
         python-version: "3.x"
         cache: pip
@@ -46,19 +45,35 @@ jobs:
     - name: Build system information
       run: python3 .github/workflows/system-info.py
 
+    - name: Cache libavif
+      uses: actions/cache@27d5ce7f107fe9357f9df03efb73ab90386fccae # v5.0.5
+      id: cache-libavif
+      with:
+        path: ~/cache-libavif
+        key: ${{ runner.os }}-libavif-${{ hashFiles('depends/install_libavif.sh', 'depends/libavif-svt4.patch') }}
+
     - name: Cache libimagequant
-      uses: actions/cache@v4
+      uses: actions/cache@27d5ce7f107fe9357f9df03efb73ab90386fccae # v5.0.5
       id: cache-libimagequant
       with:
         path: ~/cache-libimagequant
         key: ${{ runner.os }}-libimagequant-${{ hashFiles('depends/install_imagequant.sh') }}
 
+    - name: Cache libwebp
+      uses: actions/cache@27d5ce7f107fe9357f9df03efb73ab90386fccae # v5.0.5
+      id: cache-libwebp
+      with:
+        path: ~/cache-libwebp
+        key: ${{ runner.os }}-libwebp-${{ hashFiles('depends/install_webp.sh') }}
+
     - name: Install Linux dependencies
       run: |
         .ci/install.sh
       env:
         GHA_PYTHON_VERSION: "3.x"
+        GHA_LIBAVIF_CACHE_HIT: ${{ steps.cache-libavif.outputs.cache-hit }}
         GHA_LIBIMAGEQUANT_CACHE_HIT: ${{ steps.cache-libimagequant.outputs.cache-hit }}
+        GHA_LIBWEBP_CACHE_HIT: ${{ steps.cache-libwebp.outputs.cache-hit }}
 
     - name: Build
       run: |

.github/workflows/lint.yml

@@ -2,53 +2,31 @@ name: Lint
 
 on: [push, pull_request, workflow_dispatch]
 
+permissions: {}
+
 env:
   FORCE_COLOR: 1
-
-permissions:
-  contents: read
+  PREK_COLOR: always
+  RUFF_OUTPUT_FORMAT: github
 
 concurrency:
   group: ${{ github.workflow }}-${{ github.ref }}
   cancel-in-progress: true
 
 jobs:
-  build:
-
+  lint:
     runs-on: ubuntu-latest
-
     name: Lint
-
     steps:
-    - uses: actions/checkout@v4
-
-    - name: pre-commit cache
-      uses: actions/cache@v4
-      with:
-        path: ~/.cache/pre-commit
-        key: lint-pre-commit-${{ hashFiles('**/.pre-commit-config.yaml') }}
-        restore-keys: |
-          lint-pre-commit-
-
-    - name: Set up Python
-      uses: actions/setup-python@v5
-      with:
-        python-version: "3.x"
-        cache: pip
-        cache-dependency-path: "setup.py"
-
-    - name: Build system information
-      run: python3 .github/workflows/system-info.py
-
-    - name: Install dependencies
-      run: |
-        python3 -m pip install -U pip
-        python3 -m pip install -U tox
-
-    - name: Lint
-      run: tox -e lint
-      env:
-        PRE_COMMIT_COLOR: always
-
-    - name: Mypy
-      run: tox -e mypy
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+        with:
+          persist-credentials: false
+      - uses: actions/setup-python@a309ff8b426b58ec0e2a45f0f869d46889d02405 # v6.2.0
+        with:
+          python-version: "3.x"
+      - name: Install uv
+        uses: astral-sh/setup-uv@08807647e7069bb48b6ef5acd8ec9567f424441b # v8.1.0
+      - name: Lint
+        run: uvx --with tox-uv tox -e lint
+      - name: Mypy
+        run: uvx --with tox-uv tox -e mypy

.github/workflows/macos-install.sh

@@ -2,35 +2,23 @@
 
 set -e
 
-brew install \
-    freetype \
-    ghostscript \
-    libimagequant \
-    libjpeg \
-    libtiff \
-    little-cms2 \
-    openjpeg \
-    webp
-if [[ "$ImageOS" == "macos13" ]]; then
-    brew install --ignore-dependencies libraqm
-else
-    brew install libraqm
-fi
+brew bundle --file=.github/workflows/Brewfile
 export PKG_CONFIG_PATH="/usr/local/opt/openblas/lib/pkgconfig"
 
-# TODO Update condition when cffi supports 3.13
-if ! [[ "$GHA_PYTHON_VERSION" == "3.13" ]]; then PYTHONOPTIMIZE=0 python3 -m pip install cffi ; fi
-
 python3 -m pip install coverage
 python3 -m pip install defusedxml
+python3 -m pip install ipython
 python3 -m pip install olefile
 python3 -m pip install -U pytest
 python3 -m pip install -U pytest-cov
 python3 -m pip install -U pytest-timeout
 python3 -m pip install pyroma
+# optional test dependencies, only install if there's a binary package.
+python3 -m pip install --only-binary=:all: numpy || true
+python3 -m pip install --only-binary=:all: pyarrow || true
 
-# TODO Update condition when NumPy supports 3.13
-if ! [[ "$GHA_PYTHON_VERSION" == "3.13" ]]; then python3 -m pip install numpy ; fi
+# libavif
+pushd depends && ./install_libavif.sh && popd
 
 # extra test images
 pushd depends && ./install_extra_test_images.sh && popd

.github/workflows/release-drafter.yml

@@ -14,6 +14,9 @@ concurrency:
   group: ${{ github.workflow }}-${{ github.ref }}
   cancel-in-progress: true
 
+env:
+  FORCE_COLOR: 1
+
 jobs:
   update_release_draft:
     permissions:
@@ -23,6 +26,6 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       # Drafts your next release notes as pull requests are merged into "main"
-      - uses: release-drafter/release-drafter@v6
+      - uses: release-drafter/release-drafter@5de93583980a40bd78603b6dfdcda5b4df377b32 # v7.2.0
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

.github/workflows/stale.yml

@@ -6,21 +6,26 @@ on:
   workflow_dispatch:
 
 permissions:
-  issues: write
+  contents: read
 
 concurrency:
   group: ${{ github.workflow }}-${{ github.ref }}
   cancel-in-progress: true
 
+env:
+  FORCE_COLOR: 1
+
 jobs:
   stale:
-    if: github.repository_owner == 'python-pillow'
+    if: github.event.repository.fork == false
+    permissions:
+      issues: write
 
     runs-on: ubuntu-latest
 
     steps:
     - name: "Check issues"
-      uses: actions/stale@v9
+      uses: actions/stale@b5d41d4e1d5dceea10e7104786b73624c18a190f # v10.2.0
       with:
         repo-token: ${{ secrets.GITHUB_TOKEN }}
         only-labels: "Awaiting OP Action"

.github/workflows/test-cygwin.yml

@@ -1,151 +0,0 @@
-name: Test Cygwin
-
-on:
-  push:
-    branches:
-      - "**"
-    paths-ignore:
-      - ".github/workflows/docs.yml"
-      - ".github/workflows/wheels*"
-      - ".gitmodules"
-      - "docs/**"
-      - "wheels/**"
-  pull_request:
-    paths-ignore:
-      - ".github/workflows/docs.yml"
-      - ".github/workflows/wheels*"
-      - ".gitmodules"
-      - "docs/**"
-      - "wheels/**"
-  workflow_dispatch:
-
-permissions:
-  contents: read
-
-concurrency:
-  group: ${{ github.workflow }}-${{ github.ref }}
-  cancel-in-progress: true
-
-env:
-  COVERAGE_CORE: sysmon
-
-jobs:
-  build:
-    runs-on: windows-latest
-    strategy:
-      fail-fast: false
-      matrix:
-        python-minor-version: [8, 9]
-
-    timeout-minutes: 40
-
-    name: Python 3.${{ matrix.python-minor-version }}
-
-    steps:
-      - name: Fix line endings
-        run: |
-          git config --global core.autocrlf input
-
-      - name: Checkout Pillow
-        uses: actions/checkout@v4
-
-      - name: Install Cygwin
-        uses: cygwin/cygwin-install-action@v4
-        with:
-          packages: >
-            gcc-g++
-            ghostscript
-            git
-            ImageMagick
-            jpeg
-            libfreetype-devel
-            libimagequant-devel
-            libjpeg-devel
-            liblapack-devel
-            liblcms2-devel
-            libopenjp2-devel
-            libraqm-devel
-            libtiff-devel
-            libwebp-devel
-            libxcb-devel
-            libxcb-xinerama0
-            make
-            netpbm
-            perl
-            python3${{ matrix.python-minor-version }}-cffi
-            python3${{ matrix.python-minor-version }}-cython
-            python3${{ matrix.python-minor-version }}-devel
-            python3${{ matrix.python-minor-version }}-numpy
-            python3${{ matrix.python-minor-version }}-sip
-            python3${{ matrix.python-minor-version }}-tkinter
-            wget
-            xorg-server-extra
-            zlib-devel
-
-      - name: Add Lapack to PATH
-        uses: egor-tensin/cleanup-path@v4
-        with:
-          dirs: 'C:\cygwin\bin;C:\cygwin\lib\lapack'
-
-      - name: Select Python version
-        run: |
-          ln -sf c:/cygwin/bin/python3.${{ matrix.python-minor-version }} c:/cygwin/bin/python3
-
-      - name: pip cache
-        uses: actions/cache@v4
-        with:
-          path: 'C:\cygwin\home\runneradmin\.cache\pip'
-          key: ${{ runner.os }}-cygwin-pip3.${{ matrix.python-minor-version }}-${{ hashFiles('.ci/install.sh') }}
-          restore-keys: |
-            ${{ runner.os }}-cygwin-pip3.${{ matrix.python-minor-version }}-
-
-      - name: Build system information
-        run: |
-          dash.exe -c "python3 .github/workflows/system-info.py"
-
-      - name: Install dependencies
-        run: |
-          bash.exe .ci/install.sh
-
-      - name: Build
-        shell: bash.exe -eo pipefail -o igncr "{0}"
-        run: |
-          .ci/build.sh
-
-      - name: Test
-        run: |
-          bash.exe xvfb-run -s '-screen 0 1024x768x24' .ci/test.sh
-
-      - name: Prepare to upload errors
-        if: failure()
-        run: |
-          dash.exe -c "mkdir -p Tests/errors"
-
-      - name: Upload errors
-        uses: actions/upload-artifact@v4
-        if: failure()
-        with:
-          name: errors
-          path: Tests/errors
-
-      - name: After success
-        run: |
-          bash.exe .ci/after_success.sh
-
-      - name: Upload coverage
-        uses: codecov/codecov-action@v4
-        with:
-          file: ./coverage.xml
-          flags: GHA_Cygwin
-          name: Cygwin Python 3.${{ matrix.python-minor-version }}
-          token: ${{ secrets.CODECOV_ORG_TOKEN }}
-
-  success:
-    permissions:
-      contents: none
-    needs: build
-    runs-on: ubuntu-latest
-    name: Cygwin Test Successful
-    steps:
-      - name: Success
-        run: echo Cygwin Test Successful

.github/workflows/test-docker.yml

@@ -4,19 +4,14 @@ on:
   push:
     branches:
       - "**"
-    paths-ignore:
+    paths-ignore: &paths-ignore
       - ".github/workflows/docs.yml"
       - ".github/workflows/wheels*"
       - ".gitmodules"
       - "docs/**"
       - "wheels/**"
   pull_request:
-    paths-ignore:
-      - ".github/workflows/docs.yml"
-      - ".github/workflows/wheels*"
-      - ".gitmodules"
-      - "docs/**"
-      - "wheels/**"
+    paths-ignore: *paths-ignore
   workflow_dispatch:
 
 permissions:
@@ -26,59 +21,65 @@ concurrency:
   group: ${{ github.workflow }}-${{ github.ref }}
   cancel-in-progress: true
 
+env:
+  FORCE_COLOR: 1
+
 jobs:
   build:
 
-    runs-on: ubuntu-latest
+    runs-on: ${{ matrix.os }}
     strategy:
       fail-fast: false
       matrix:
+        os: ["ubuntu-latest"]
         docker: [
           # Run slower jobs first to give them a headstart and reduce waiting time
-          ubuntu-22.04-jammy-arm64v8,
-          ubuntu-24.04-noble-ppc64le,
-          ubuntu-24.04-noble-s390x,
+          ubuntu-26.04-resolute-ppc64le,
+          ubuntu-26.04-resolute-s390x,
           # Then run the remainder
           alpine,
-          amazon-2-amd64,
           amazon-2023-amd64,
           arch,
           centos-stream-9-amd64,
-          debian-11-bullseye-amd64,
-          debian-12-bookworm-x86,
-          debian-12-bookworm-amd64,
-          fedora-39-amd64,
-          fedora-40-amd64,
+          centos-stream-10-amd64,
+          debian-13-trixie-x86,
+          debian-13-trixie-amd64,
+          fedora-43-amd64,
+          fedora-44-amd64,
           gentoo,
-          ubuntu-20.04-focal-amd64,
           ubuntu-22.04-jammy-amd64,
           ubuntu-24.04-noble-amd64,
+          ubuntu-26.04-resolute-amd64,
         ]
         dockerTag: [main]
         include:
-          - docker: "ubuntu-22.04-jammy-arm64v8"
-            qemu-arch: "aarch64"
-          - docker: "ubuntu-24.04-noble-ppc64le"
+          - docker: "ubuntu-26.04-resolute-ppc64le"
             qemu-arch: "ppc64le"
-          - docker: "ubuntu-24.04-noble-s390x"
+          - docker: "ubuntu-26.04-resolute-s390x"
             qemu-arch: "s390x"
+          - docker: "ubuntu-26.04-resolute-arm64v8"
+            os: "ubuntu-24.04-arm"
+            dockerTag: main
 
     name: ${{ matrix.docker }}
 
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+      with:
+        persist-credentials: false
 
     - name: Build system information
       run: python3 .github/workflows/system-info.py
 
     - name: Set up QEMU
       if: "matrix.qemu-arch"
-      run: |
-        docker run --rm --privileged aptman/qus -s -- -p ${{ matrix.qemu-arch }}
+      uses: docker/setup-qemu-action@ce360397dd3f832beb865e1373c09c0e9f86d70a # v4.0.0
+      with:
+        platforms: ${{ matrix.qemu-arch }}
 
     - name: Docker pull
       run: |
-        docker pull pythonpillow/${{ matrix.docker }}:${{ matrix.dockerTag }}
+        docker pull ${{ matrix.qemu-arch && format('--platform=linux/{0}', matrix.qemu-arch)}} pythonpillow/${{ matrix.docker }}:${{ matrix.dockerTag }}
 
     - name: Docker build
       run: |
@@ -89,23 +90,21 @@ jobs:
 
     - name: After success
       run: |
-        PATH="$PATH:~/.local/bin"
         docker start pillow_container
+        sudo docker cp pillow_container:/Pillow /Pillow
+        sudo chown -R runner /Pillow
         pil_path=`docker exec pillow_container /vpy3/bin/python -c 'import os, PIL;print(os.path.realpath(os.path.dirname(PIL.__file__)))'`
         docker stop pillow_container
         sudo mkdir -p $pil_path
         sudo cp src/PIL/*.py $pil_path
+        cd /Pillow
         .ci/after_success.sh
-      env:
-        MATRIX_DOCKER: ${{ matrix.docker }}
 
     - name: Upload coverage
-      uses: codecov/codecov-action@v4
+      uses: codecov/codecov-action@57e3a136b779b570ffcdbf80b3bdc90e7fab3de2 # v6.0.0
       with:
         flags: GHA_Docker
         name: ${{ matrix.docker }}
-        gcov: true
-        token: ${{ secrets.CODECOV_ORG_TOKEN }}
 
   success:
     permissions:

.github/workflows/test-mingw.yml

@@ -4,19 +4,14 @@ on:
   push:
     branches:
       - "**"
-    paths-ignore:
+    paths-ignore: &paths-ignore
       - ".github/workflows/docs.yml"
       - ".github/workflows/wheels*"
       - ".gitmodules"
       - "docs/**"
       - "wheels/**"
   pull_request:
-    paths-ignore:
-      - ".github/workflows/docs.yml"
-      - ".github/workflows/wheels*"
-      - ".gitmodules"
-      - "docs/**"
-      - "wheels/**"
+    paths-ignore: *paths-ignore
   workflow_dispatch:
 
 permissions:
@@ -28,6 +23,7 @@ concurrency:
 
 env:
   COVERAGE_CORE: sysmon
+  FORCE_COLOR: 1
 
 jobs:
   build:
@@ -45,7 +41,9 @@ jobs:
 
     steps:
       - name: Checkout Pillow
-        uses: actions/checkout@v4
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+        with:
+          persist-credentials: false
 
       - name: Set up shell
         run: echo "C:\msys64\usr\bin\" >> $env:GITHUB_PATH
@@ -58,36 +56,34 @@ jobs:
               mingw-w64-x86_64-gcc \
               mingw-w64-x86_64-ghostscript \
               mingw-w64-x86_64-lcms2 \
+              mingw-w64-x86_64-libavif \
               mingw-w64-x86_64-libimagequant \
               mingw-w64-x86_64-libjpeg-turbo \
               mingw-w64-x86_64-libraqm \
               mingw-w64-x86_64-libtiff \
               mingw-w64-x86_64-libwebp \
               mingw-w64-x86_64-openjpeg2 \
-              mingw-w64-x86_64-python3-cffi \
-              mingw-w64-x86_64-python3-numpy \
-              mingw-w64-x86_64-python3-olefile \
-              mingw-w64-x86_64-python3-setuptools \
+              mingw-w64-x86_64-python-numpy \
+              mingw-w64-x86_64-python-olefile \
+              mingw-w64-x86_64-python-pip \
+              mingw-w64-x86_64-python-pytest \
+              mingw-w64-x86_64-python-pytest-cov \
+              mingw-w64-x86_64-python-pytest-timeout \
               mingw-w64-x86_64-python-pyqt6
 
-          python3 -m ensurepip
-          python3 -m pip install pyroma pytest pytest-cov pytest-timeout
-
           pushd depends && ./install_extra_test_images.sh && popd
 
       - name: Build Pillow
-        run: SETUPTOOLS_USE_DISTUTILS="stdlib" CFLAGS="-coverage" python3 -m pip install .
+        run: CFLAGS="-coverage" python3 -m pip install .
 
       - name: Test Pillow
         run: |
           python3 selftest.py --installed
-          python3 -c "from PIL import Image"
-          python3 -m pytest -vx --cov PIL --cov Tests --cov-report term --cov-report xml Tests
+          .ci/test.sh
 
       - name: Upload coverage
-        uses: codecov/codecov-action@v4
+        uses: codecov/codecov-action@57e3a136b779b570ffcdbf80b3bdc90e7fab3de2 # v6.0.0
         with:
-          file: ./coverage.xml
+          files: ./coverage.xml
           flags: GHA_Windows
           name: "MSYS2 MinGW"
-          token: ${{ secrets.CODECOV_ORG_TOKEN }}

.github/workflows/test-valgrind-memory.yml

@@ -0,0 +1,64 @@
+name: Test Valgrind Memory Leaks
+
+# like the Docker tests, but running valgrind only on *.c/*.h changes.
+
+# this is very expensive. Only run on the pull request.
+on:
+  # push:
+  #   branches:
+  #     - "**"
+  #   paths:
+  #     - ".github/workflows/test-valgrind-memory.yml"
+  #     - "**.c"
+  #     - "**.h"
+  #     - "depends/docker-test-valgrind-memory.sh"
+  pull_request:
+    paths:
+      - ".github/workflows/test-valgrind-memory.yml"
+      - "**.c"
+      - "**.h"
+      - "depends/docker-test-valgrind-memory.sh"
+  workflow_dispatch:
+
+permissions:
+  contents: read
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+env:
+  FORCE_COLOR: 1
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        docker: [
+          ubuntu-22.04-jammy-amd64-valgrind,
+        ]
+        dockerTag: [main]
+
+    name: ${{ matrix.docker }}
+
+    steps:
+    - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+      with:
+        persist-credentials: false
+
+    - name: Build system information
+      run: python3 .github/workflows/system-info.py
+
+    - name: Docker pull
+      run: |
+        docker pull pythonpillow/${{ matrix.docker }}:${{ matrix.dockerTag }}
+
+    - name: Build and Run Valgrind
+      run: |
+        # The Pillow user in the docker container is UID 1001
+        sudo chown -R 1001 $GITHUB_WORKSPACE
+        docker run --name pillow_container -e "PILLOW_VALGRIND_TEST=true" -v $GITHUB_WORKSPACE:/Pillow pythonpillow/${{ matrix.docker }}:${{ matrix.dockerTag }} /Pillow/depends/docker-test-valgrind-memory.sh
+        sudo chown -R runner $GITHUB_WORKSPACE

.github/workflows/test-valgrind.yml

@@ -6,15 +6,12 @@ on:
   push:
     branches:
       - "**"
-    paths:
+    paths: &paths
       - ".github/workflows/test-valgrind.yml"
       - "**.c"
       - "**.h"
   pull_request:
-    paths:
-      - ".github/workflows/test-valgrind.yml"
-      - "**.c"
-      - "**.h"
+    paths: *paths
   workflow_dispatch:
 
 permissions:
@@ -24,6 +21,9 @@ concurrency:
   group: ${{ github.workflow }}-${{ github.ref }}
   cancel-in-progress: true
 
+env:
+  FORCE_COLOR: 1
+
 jobs:
   build:
 
@@ -39,7 +39,9 @@ jobs:
     name: ${{ matrix.docker }}
 
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+      with:
+        persist-credentials: false
 
     - name: Build system information
       run: python3 .github/workflows/system-info.py

.github/workflows/test-windows.yml

@@ -4,19 +4,14 @@ on:
   push:
     branches:
       - "**"
-    paths-ignore:
+    paths-ignore: &paths-ignore
       - ".github/workflows/docs.yml"
       - ".github/workflows/wheels*"
       - ".gitmodules"
       - "docs/**"
       - "wheels/**"
   pull_request:
-    paths-ignore:
-      - ".github/workflows/docs.yml"
-      - ".github/workflows/wheels*"
-      - ".gitmodules"
-      - "docs/**"
-      - "wheels/**"
+    paths-ignore: *paths-ignore
   workflow_dispatch:
 
 permissions:
@@ -28,57 +23,70 @@ concurrency:
 
 env:
   COVERAGE_CORE: sysmon
+  FORCE_COLOR: 1
 
 jobs:
   build:
-    runs-on: windows-latest
+    runs-on: ${{ matrix.os }}
     strategy:
       fail-fast: false
       matrix:
-        python-version: ["pypy3.10", "pypy3.9", "3.8", "3.9", "3.10", "3.11", "3.12", "3.13"]
+        python-version: ["pypy3.11", "3.11", "3.12", "3.13", "3.14", "3.15"]
+        architecture: ["x64"]
+        os: ["windows-latest"]
+        include:
+            # Test the oldest Python on 32-bit
+            - { python-version: "3.10", architecture: "x86", os: "windows-2022" }
 
-    timeout-minutes: 30
+    timeout-minutes: 45
 
-    name: Python ${{ matrix.python-version }}
+    name: Python ${{ matrix.python-version }} (${{ matrix.architecture }})
 
     steps:
     - name: Checkout Pillow
-      uses: actions/checkout@v4
+      uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+      with:
+        persist-credentials: false
 
     - name: Checkout cached dependencies
-      uses: actions/checkout@v4
+      uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
       with:
+        persist-credentials: false
         repository: python-pillow/pillow-depends
         path: winbuild\depends
 
     - name: Checkout extra test images
-      uses: actions/checkout@v4
+      uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
       with:
+        persist-credentials: false
         repository: python-pillow/test-images
         path: Tests\test-images
 
     # sets env: pythonLocation
     - name: Set up Python
-      uses: actions/setup-python@v5
+      uses: actions/setup-python@a309ff8b426b58ec0e2a45f0f869d46889d02405 # v6.2.0
       with:
         python-version: ${{ matrix.python-version }}
         allow-prereleases: true
+        architecture: ${{ matrix.architecture }}
         cache: pip
         cache-dependency-path: ".github/workflows/test-windows.yml"
 
     - name: Print build system information
       run: python3 .github/workflows/system-info.py
 
-    - name: Install Python dependencies
-      run: >
-        python3 -m pip install
-        coverage>=7.4.2
-        defusedxml
-        olefile
-        pyroma
-        pytest
-        pytest-cov
-        pytest-timeout
+    - name: Upgrade pip
+      run: |
+        python3 -m pip install --upgrade pip
+
+    - name: Install CPython dependencies
+      if: "!contains(matrix.python-version, 'pypy') && matrix.architecture != 'x86'"
+      run: |
+        python3 -m pip install PyQt6
+
+    - name: Install PyArrow dependency
+      run: |
+        python3 -m pip install --only-binary=:all: pyarrow || true
 
     - name: Install dependencies
       id: install
@@ -86,8 +94,8 @@ jobs:
         choco install nasm --no-progress
         echo "C:\Program Files\NASM" >> $env:GITHUB_PATH
 
-        choco install ghostscript --version=10.3.1 --no-progress
-        echo "C:\Program Files\gs\gs10.00.0\bin" >> $env:GITHUB_PATH
+        choco install ghostscript --version=10.7.0 --no-progress
+        echo "C:\Program Files\gs\gs10.07.0\bin" >> $env:GITHUB_PATH
 
         # Install extra test images
         xcopy /S /Y Tests\test-images\* Tests\images
@@ -100,7 +108,7 @@ jobs:
 
     - name: Cache build
       id: build-cache
-      uses: actions/cache@v4
+      uses: actions/cache@27d5ce7f107fe9357f9df03efb73ab90386fccae # v5.0.5
       with:
         path: winbuild\build
         key:
@@ -137,6 +145,10 @@ jobs:
       if: steps.build-cache.outputs.cache-hit != 'true'
       run: "& winbuild\\build\\build_dep_libpng.cmd"
 
+    - name: Build dependencies / libavif
+      if: steps.build-cache.outputs.cache-hit != 'true' && matrix.architecture == 'x64'
+      run: "& winbuild\\build\\build_dep_libavif.cmd"
+
     # for FreeType WOFF2 font support
     - name: Build dependencies / brotli
       if: steps.build-cache.outputs.cache-hit != 'true'
@@ -172,13 +184,14 @@ jobs:
     # trim ~150MB for each job
     - name: Optimize build cache
       if: steps.build-cache.outputs.cache-hit != 'true'
-      run: rmdir /S /Q winbuild\build\src
-      shell: cmd
+      run: |
+        rm -rf winbuild\build\src
+      shell: bash
 
     - name: Build Pillow
       run: |
         $FLAGS="-C raqm=vendor -C fribidi=vendor"
-        cmd /c "winbuild\build\build_env.cmd && $env:pythonLocation\python.exe -m pip install -v $FLAGS ."
+        cmd /c "winbuild\build\build_env.cmd && $env:pythonLocation\python.exe -m pip install -v $FLAGS .[tests]"
         & $env:pythonLocation\python.exe selftest.py --installed
       shell: pwsh
 
@@ -190,9 +203,7 @@ jobs:
 
     - name: Test Pillow
       run: |
-        path %GITHUB_WORKSPACE%\\winbuild\\build\\bin;%PATH%
-        python.exe -m pytest -vx -W always --cov PIL --cov Tests --cov-report term --cov-report xml Tests
-      shell: cmd
+        .ci\test.cmd
 
     - name: Prepare to upload errors
       if: failure()
@@ -201,7 +212,7 @@ jobs:
       shell: bash
 
     - name: Upload errors
-      uses: actions/upload-artifact@v4
+      uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a # v7.0.1
       if: failure()
       with:
         name: errors
@@ -213,12 +224,11 @@ jobs:
       shell: pwsh
 
     - name: Upload coverage
-      uses: codecov/codecov-action@v4
+      uses: codecov/codecov-action@57e3a136b779b570ffcdbf80b3bdc90e7fab3de2 # v6.0.0
       with:
-        file: ./coverage.xml
+        files: ./coverage.xml
         flags: GHA_Windows
         name: ${{ runner.os }} Python ${{ matrix.python-version }}
-        token: ${{ secrets.CODECOV_ORG_TOKEN }}
 
   success:
     permissions:

.github/workflows/test.yml

@@ -4,19 +4,14 @@ on:
   push:
     branches:
       - "**"
-    paths-ignore:
+    paths-ignore: &paths-ignore
       - ".github/workflows/docs.yml"
       - ".github/workflows/wheels*"
       - ".gitmodules"
       - "docs/**"
       - "wheels/**"
   pull_request:
-    paths-ignore:
-      - ".github/workflows/docs.yml"
-      - ".github/workflows/wheels*"
-      - ".gitmodules"
-      - "docs/**"
-      - "wheels/**"
+    paths-ignore: *paths-ignore
   workflow_dispatch:
 
 permissions:
@@ -29,6 +24,7 @@ concurrency:
 env:
   COVERAGE_CORE: sysmon
   FORCE_COLOR: 1
+  PIP_DISABLE_PIP_VERSION_CHECK: 1
 
 jobs:
   build:
@@ -37,44 +33,38 @@ jobs:
       fail-fast: false
       matrix:
         os: [
-          "macos-14",
+          "macos-latest",
           "ubuntu-latest",
         ]
         python-version: [
-          "pypy3.10",
-          "pypy3.9",
+          "pypy3.11",
+          "3.15t",
+          "3.15",
+          "3.14t",
+          "3.14",
           "3.13",
           "3.12",
           "3.11",
           "3.10",
-          "3.9",
-          "3.8",
         ]
         include:
-        - python-version: "3.11"
-          PYTHONOPTIMIZE: 1
-          REVERSE: "--reverse"
-        - python-version: "3.10"
-          PYTHONOPTIMIZE: 2
-        # M1 only available for 3.10+
-        - os: "macos-13"
-          python-version: "3.9"
-        - os: "macos-13"
-          python-version: "3.8"
+        - { python-version: "3.12", PYTHONOPTIMIZE: 1, REVERSE: "--reverse" }
+        - { python-version: "3.11", PYTHONOPTIMIZE: 2 }
+        # Intel
+        - { os: "macos-26-intel", python-version: "3.10" }
         exclude:
-        - os: "macos-14"
-          python-version: "3.9"
-        - os: "macos-14"
-          python-version: "3.8"
+        - { os: "macos-latest", python-version: "3.10" }
 
     runs-on: ${{ matrix.os }}
     name: ${{ matrix.os }} Python ${{ matrix.python-version }}
 
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+      with:
+        persist-credentials: false
 
     - name: Set up Python ${{ matrix.python-version }}
-      uses: actions/setup-python@v5
+      uses: actions/setup-python@a309ff8b426b58ec0e2a45f0f869d46889d02405 # v6.2.0
       with:
         python-version: ${{ matrix.python-version }}
         allow-prereleases: true
@@ -86,21 +76,39 @@ jobs:
     - name: Build system information
       run: python3 .github/workflows/system-info.py
 
+    - name: Cache libavif
+      if: startsWith(matrix.os, 'ubuntu')
+      uses: actions/cache@27d5ce7f107fe9357f9df03efb73ab90386fccae # v5.0.5
+      id: cache-libavif
+      with:
+        path: ~/cache-libavif
+        key: ${{ runner.os }}-libavif-${{ hashFiles('depends/install_libavif.sh', 'depends/libavif-svt4.patch') }}
+
     - name: Cache libimagequant
       if: startsWith(matrix.os, 'ubuntu')
-      uses: actions/cache@v4
+      uses: actions/cache@27d5ce7f107fe9357f9df03efb73ab90386fccae # v5.0.5
       id: cache-libimagequant
       with:
         path: ~/cache-libimagequant
         key: ${{ runner.os }}-libimagequant-${{ hashFiles('depends/install_imagequant.sh') }}
 
+    - name: Cache libwebp
+      if: startsWith(matrix.os, 'ubuntu')
+      uses: actions/cache@27d5ce7f107fe9357f9df03efb73ab90386fccae # v5.0.5
+      id: cache-libwebp
+      with:
+        path: ~/cache-libwebp
+        key: ${{ runner.os }}-libwebp-${{ hashFiles('depends/install_webp.sh') }}
+
     - name: Install Linux dependencies
       if: startsWith(matrix.os, 'ubuntu')
       run: |
         .ci/install.sh
       env:
         GHA_PYTHON_VERSION: ${{ matrix.python-version }}
+        GHA_LIBAVIF_CACHE_HIT: ${{ steps.cache-libavif.outputs.cache-hit }}
         GHA_LIBIMAGEQUANT_CACHE_HIT: ${{ steps.cache-libimagequant.outputs.cache-hit }}
+        GHA_LIBWEBP_CACHE_HIT: ${{ steps.cache-libwebp.outputs.cache-hit }}
 
     - name: Install macOS dependencies
       if: startsWith(matrix.os, 'macOS')
@@ -110,7 +118,7 @@ jobs:
         GHA_PYTHON_VERSION: ${{ matrix.python-version }}
 
     - name: Register gcc problem matcher
-      if: "matrix.os == 'ubuntu-latest' && matrix.python-version == '3.12'"
+      if: "matrix.os == 'ubuntu-latest' && matrix.python-version == '3.14'"
       run: echo "::add-matcher::.github/problem-matchers/gcc.json"
 
     - name: Build
@@ -139,7 +147,7 @@ jobs:
         mkdir -p Tests/errors
 
     - name: Upload errors
-      uses: actions/upload-artifact@v4
+      uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a # v7.0.1
       if: failure()
       with:
         name: errors
@@ -150,12 +158,10 @@ jobs:
         .ci/after_success.sh
 
     - name: Upload coverage
-      uses: codecov/codecov-action@v4
+      uses: codecov/codecov-action@57e3a136b779b570ffcdbf80b3bdc90e7fab3de2 # v6.0.0
       with:
         flags: ${{ matrix.os == 'ubuntu-latest' && 'GHA_Ubuntu' || 'GHA_macOS' }}
         name: ${{ matrix.os }} Python ${{ matrix.python-version }}
-        gcov: true
-        token: ${{ secrets.CODECOV_ORG_TOKEN }}
 
   success:
     permissions:

.github/workflows/wheels-dependencies.sh

@@ -1,150 +1,412 @@
 #!/bin/bash
-# Define custom utilities
-# Test for macOS with [ -n "$IS_MACOS" ]
-if [ -z "$IS_MACOS" ]; then
-    export MB_ML_LIBC=${AUDITWHEEL_POLICY::9}
-    export MB_ML_VER=${AUDITWHEEL_POLICY:9}
+
+# Safety check - Pillow builds require that CIBW_ARCHS is set, and that it only
+# contains a single value (even though cibuildwheel allows multiple values in
+# CIBW_ARCHS). This check doesn't work on Linux because of how the CIBW_ARCHS
+# variable is exposed.
+function check_cibw_archs {
+    if [[ -z "$CIBW_ARCHS" ]]; then
+        echo "ERROR: Pillow builds require CIBW_ARCHS be defined."
+        exit 1
+    fi
+    if [[ "$CIBW_ARCHS" == *" "* ]]; then
+        echo "ERROR: Pillow builds only support a single architecture in CIBW_ARCHS."
+        exit 1
+    fi
+}
+
+# Setup that needs to be done before multibuild utils are invoked. Process
+# potential cross-build platforms before native platforms to ensure that we pick
+# up the cross environment.
+PROJECTDIR=$(pwd)
+if [[ "$CIBW_PLATFORM" == "ios" ]]; then
+    check_cibw_archs
+    # On iOS, CIBW_ARCHS is actually a multi-arch - arm64_iphoneos,
+    # arm64_iphonesimulator or x86_64_iphonesimulator. Split into the CPU
+    # platform, and the iOS SDK.
+    PLAT=$(echo $CIBW_ARCHS | sed "s/\(.*\)_\(.*\)/\1/")
+    IOS_SDK=$(echo $CIBW_ARCHS | sed "s/\(.*\)_\(.*\)/\2/")
+
+    # Build iOS builds in `build/iphoneos` or `build/iphonesimulator`
+    # (depending on the build target). Install them into `build/deps/iphoneos`
+    # or `build/deps/iphonesimulator`
+    WORKDIR=$(pwd)/build/$IOS_SDK
+    BUILD_PREFIX=$(pwd)/build/deps/$IOS_SDK
+
+    # GNU tooling insists on using aarch64 rather than arm64
+    if [[ $PLAT == "arm64" ]]; then
+        GNU_ARCH=aarch64
+    else
+        GNU_ARCH=x86_64
+    fi
+
+    IOS_SDK_PATH=$(xcrun --sdk $IOS_SDK --show-sdk-path)
+    CMAKE_SYSTEM_NAME=iOS
+    IOS_HOST_TRIPLE=$PLAT-apple-ios$IPHONEOS_DEPLOYMENT_TARGET
+    if [[ "$IOS_SDK" == "iphonesimulator" ]]; then
+        IOS_HOST_TRIPLE=$IOS_HOST_TRIPLE-simulator
+    fi
+
+    # GNU Autotools doesn't recognize the existence of arm64-apple-ios-simulator
+    # as a valid host. However, the only difference between arm64-apple-ios and
+    # arm64-apple-ios-simulator is the choice of sysroot, and that is
+    # coordinated by CC, CFLAGS etc. From the perspective of configure, the two
+    # platforms are identical, so we can use arm64-apple-ios consistently.
+    # This (mostly) avoids us needing to patch config.sub in dependency sources.
+    HOST_CONFIGURE_FLAGS="--disable-shared --enable-static --host=$GNU_ARCH-apple-ios --build=$GNU_ARCH-apple-darwin"
+
+    # CMake has native support for iOS. However, most of that support is based
+    # on using the Xcode builder, which isn't very helpful for most of Pillow's
+    # dependencies. Therefore, we lean on the OSX configurations, plus CC, CFLAGS
+    # etc. to ensure the right sysroot is selected.
+    HOST_CMAKE_FLAGS="-DCMAKE_SYSTEM_NAME=$CMAKE_SYSTEM_NAME -DCMAKE_SYSTEM_PROCESSOR=$GNU_ARCH -DCMAKE_OSX_DEPLOYMENT_TARGET=$IPHONEOS_DEPLOYMENT_TARGET -DCMAKE_OSX_SYSROOT=$IOS_SDK_PATH -DBUILD_SHARED_LIBS=NO -DENABLE_SHARED=NO"
+
+    # Meson needs to be pointed at a cross-platform configuration file
+    # This will be generated once CC etc. have been evaluated.
+    HOST_MESON_FLAGS="--cross-file $WORKDIR/meson-cross.txt -Dprefer_static=true -Ddefault_library=static"
+
+elif [[ "$(uname -s)" == "Darwin" ]]; then
+    check_cibw_archs
+    # Build macOS dependencies in `build/darwin`
+    # Install them into `build/deps/darwin`
+    PLAT=$CIBW_ARCHS
+    WORKDIR=$(pwd)/build/darwin
+    BUILD_PREFIX=$(pwd)/build/deps/darwin
+else
+    # Build prefix will default to /usr/local
+    PLAT="${CIBW_ARCHS:-$AUDITWHEEL_ARCH}"
+    WORKDIR=$(pwd)/build
+    MB_ML_LIBC=${AUDITWHEEL_POLICY::9}
+    MB_ML_VER=${AUDITWHEEL_POLICY:9}
 fi
-export PLAT=$CIBW_ARCHS
+
+# Define custom utilities
 source wheels/multibuild/common_utils.sh
 source wheels/multibuild/library_builders.sh
-if [ -z "$IS_MACOS" ]; then
+if [[ -z "$IS_MACOS" ]]; then
     source wheels/multibuild/manylinux_utils.sh
 fi
 
 ARCHIVE_SDIR=pillow-depends-main
 
-# Package versions for fresh source builds
-FREETYPE_VERSION=2.13.2
-HARFBUZZ_VERSION=8.5.0
-LIBPNG_VERSION=1.6.43
-JPEGTURBO_VERSION=3.0.3
-OPENJPEG_VERSION=2.5.2
-XZ_VERSION=5.4.5
-TIFF_VERSION=4.6.0
-LCMS2_VERSION=2.16
-if [[ -n "$IS_MACOS" ]]; then
-    GIFLIB_VERSION=5.2.2
-else
-    GIFLIB_VERSION=5.2.1
-fi
-if [[ -n "$IS_MACOS" ]] || [[ "$MB_ML_VER" != 2014 ]]; then
-    ZLIB_VERSION=1.3.1
-else
-    ZLIB_VERSION=1.2.8
-fi
-LIBWEBP_VERSION=1.4.0
-BZIP2_VERSION=1.0.8
-LIBXCB_VERSION=1.17.0
-BROTLI_VERSION=1.1.0
+VERSIONS_FILE="$PROJECTDIR/.github/dependencies.json"
+_get_ver() { python3 -c "import json; print(json.load(open('$VERSIONS_FILE'))['$1'])"; }
+FREETYPE_VERSION=$(_get_ver freetype)
+HARFBUZZ_VERSION=$(_get_ver harfbuzz)
+LIBPNG_VERSION=$(_get_ver libpng)
+JPEGTURBO_VERSION=$(_get_ver jpegturbo)
+OPENJPEG_VERSION=$(_get_ver openjpeg)
+XZ_VERSION=$(_get_ver xz)
+ZSTD_VERSION=$(_get_ver zstd)
+TIFF_VERSION=$(_get_ver tiff)
+LCMS2_VERSION=$(_get_ver lcms2)
+ZLIB_NG_VERSION=$(_get_ver zlib-ng)
+LIBWEBP_VERSION=$(_get_ver libwebp)
+BZIP2_VERSION=$(_get_ver bzip2)
+LIBXCB_VERSION=$(_get_ver libxcb)
+BROTLI_VERSION=$(_get_ver brotli)
+LIBAVIF_VERSION=$(_get_ver libavif)
 
-if [[ -n "$IS_MACOS" ]] && [[ "$CIBW_ARCHS" == "x86_64" ]]; then
-    function build_openjpeg {
-        local out_dir=$(fetch_unpack https://github.com/uclouvain/openjpeg/archive/v${OPENJPEG_VERSION}.tar.gz openjpeg-${OPENJPEG_VERSION}.tar.gz)
-        (cd $out_dir \
-            && cmake -DCMAKE_INSTALL_PREFIX=$BUILD_PREFIX -DCMAKE_INSTALL_NAME_DIR=$BUILD_PREFIX/lib . \
-            && make install)
-        touch openjpeg-stamp
-    }
-fi
+function build_pkg_config {
+    if [ -e pkg-config-stamp ]; then return; fi
+    # This essentially duplicates the Homebrew recipe.
+    # On iOS, we need a binary that can be executed on the build machine; but we
+    # can create a host-specific pc-path to store iOS .pc files. To ensure a
+    # macOS-compatible build, we temporarily clear environment flags that set
+    # iOS-specific values.
+    if [[ -n "$IOS_SDK" ]]; then
+        ORIGINAL_HOST_CONFIGURE_FLAGS=$HOST_CONFIGURE_FLAGS
+        ORIGINAL_IPHONEOS_DEPLOYMENT_TARGET=$IPHONEOS_DEPLOYMENT_TARGET
+        unset HOST_CONFIGURE_FLAGS
+        unset IPHONEOS_DEPLOYMENT_TARGET
+    fi
+
+    CFLAGS="$CFLAGS -Wno-int-conversion" CPPFLAGS="" build_simple pkg-config 0.29.2 https://pkg-config.freedesktop.org/releases tar.gz \
+        --disable-debug --disable-host-tool --with-internal-glib \
+        --with-pc-path=$BUILD_PREFIX/share/pkgconfig:$BUILD_PREFIX/lib/pkgconfig \
+        --with-system-include-path=$(xcrun --show-sdk-path --sdk macosx)/usr/include
+
+    if [[ -n "$IOS_SDK" ]]; then
+        HOST_CONFIGURE_FLAGS=$ORIGINAL_HOST_CONFIGURE_FLAGS
+        IPHONEOS_DEPLOYMENT_TARGET=$ORIGINAL_IPHONEOS_DEPLOYMENT_TARGET
+    fi;
+
+    export PKG_CONFIG=$BUILD_PREFIX/bin/pkg-config
+    touch pkg-config-stamp
+}
+
+function build_zlib_ng {
+    if [ -e zlib-stamp ]; then return; fi
+    # zlib-ng uses a "configure" script, but it's not a GNU autotools script, so
+    # it doesn't honor the usual flags. Temporarily disable any
+    # cross-compilation flags.
+    ORIGINAL_HOST_CONFIGURE_FLAGS=$HOST_CONFIGURE_FLAGS
+    unset HOST_CONFIGURE_FLAGS
+
+    build_github zlib-ng/zlib-ng $ZLIB_NG_VERSION --installnamedir=$BUILD_PREFIX/lib --zlib-compat
+
+    HOST_CONFIGURE_FLAGS=$ORIGINAL_HOST_CONFIGURE_FLAGS
+    touch zlib-stamp
+}
 
 function build_brotli {
-    local cmake=$(get_modern_cmake)
-    local out_dir=$(fetch_unpack https://github.com/google/brotli/archive/v$BROTLI_VERSION.tar.gz brotli-1.1.0.tar.gz)
+    if [ -e brotli-stamp ]; then return; fi
+    local out_dir=$(fetch_unpack https://github.com/google/brotli/archive/v$BROTLI_VERSION.tar.gz brotli-$BROTLI_VERSION.tar.gz)
     (cd $out_dir \
-        && $cmake -DCMAKE_INSTALL_PREFIX=$BUILD_PREFIX -DCMAKE_INSTALL_NAME_DIR=$BUILD_PREFIX/lib . \
-        && make install)
-    if [[ "$MB_ML_LIBC" == "manylinux" ]]; then
-        cp /usr/local/lib64/libbrotli* /usr/local/lib
-        cp /usr/local/lib64/pkgconfig/libbrotli* /usr/local/lib/pkgconfig
+        && cmake -DCMAKE_INSTALL_PREFIX=$BUILD_PREFIX -DCMAKE_INSTALL_LIBDIR=$BUILD_PREFIX/lib -DCMAKE_INSTALL_NAME_DIR=$BUILD_PREFIX/lib -DCMAKE_MACOSX_BUNDLE=OFF $HOST_CMAKE_FLAGS . \
+        && make -j4 install)
+    touch brotli-stamp
+}
+
+function build_harfbuzz {
+    if [ -e harfbuzz-stamp ]; then return; fi
+    python3 -m pip install meson ninja
+
+    local out_dir=$(fetch_unpack https://github.com/harfbuzz/harfbuzz/releases/download/$HARFBUZZ_VERSION/harfbuzz-$HARFBUZZ_VERSION.tar.xz harfbuzz-$HARFBUZZ_VERSION.tar.xz)
+    (cd $out_dir \
+        && meson setup build --prefix=$BUILD_PREFIX --libdir=$BUILD_PREFIX/lib --buildtype=minsize -Dfreetype=enabled -Dglib=disabled -Dtests=disabled $HOST_MESON_FLAGS)
+    (cd $out_dir/build \
+        && meson install)
+    touch harfbuzz-stamp
+}
+
+function build_libavif {
+    if [ -e libavif-stamp ]; then return; fi
+
+    python3 -m pip install meson ninja
+
+    if ([[ "$PLAT" == "x86_64" ]] && [[ -z "$IOS_SDK" ]]) || [ -n "$SANITIZER" ]; then
+        build_simple nasm 2.16.03 https://www.nasm.us/pub/nasm/releasebuilds/2.16.03
     fi
+
+    local build_shared=ON
+    local lto=ON
+
+    local libavif_cmake_flags
+
+    if [[ -n "$IS_MACOS" ]]; then
+        lto=OFF
+        libavif_cmake_flags=(
+            -DCMAKE_C_FLAGS_MINSIZEREL="-Oz -DNDEBUG -flto" \
+            -DCMAKE_CXX_FLAGS_MINSIZEREL="-Oz -DNDEBUG -flto" \
+            -DCMAKE_SHARED_LINKER_FLAGS_INIT="-Wl,-S,-x,-dead_strip_dylibs" \
+        )
+        if [[ -n "$IOS_SDK" ]]; then
+            build_shared=OFF
+        fi
+    else
+        libavif_cmake_flags=(-DCMAKE_SHARED_LINKER_FLAGS_INIT="-Wl,--strip-all,-z,relro,-z,now")
+    fi
+    if [[ -n "$IOS_SDK" ]] && [[ "$PLAT" == "x86_64" ]]; then
+        libavif_cmake_flags+=(-DAOM_TARGET_CPU=generic)
+    else
+        libavif_cmake_flags+=(
+            -DAVIF_CODEC_AOM_DECODE=OFF \
+            -DAVIF_CODEC_DAV1D=LOCAL
+        )
+    fi
+
+    local out_dir=$(fetch_unpack https://github.com/AOMediaCodec/libavif/archive/refs/tags/v$LIBAVIF_VERSION.tar.gz libavif-$LIBAVIF_VERSION.tar.gz)
+
+    # CONFIG_AV1_HIGHBITDEPTH=0 is a flag for libaom (included as a subproject
+    # of libavif) that disables support for encoding high bit depth images.
+    (cd $out_dir \
+        && cmake \
+            -DCMAKE_INSTALL_PREFIX=$BUILD_PREFIX \
+            -DCMAKE_INSTALL_LIBDIR=$BUILD_PREFIX/lib \
+            -DCMAKE_INSTALL_NAME_DIR=$BUILD_PREFIX/lib \
+            -DBUILD_SHARED_LIBS=$build_shared \
+            -DAVIF_LIBSHARPYUV=LOCAL \
+            -DAVIF_LIBYUV=LOCAL \
+            -DAVIF_CODEC_AOM=LOCAL \
+            -DCONFIG_AV1_HIGHBITDEPTH=0 \
+            -DCMAKE_INTERPROCEDURAL_OPTIMIZATION=$lto \
+            -DCMAKE_C_VISIBILITY_PRESET=hidden \
+            -DCMAKE_CXX_VISIBILITY_PRESET=hidden \
+            -DCMAKE_BUILD_TYPE=MinSizeRel \
+            "${libavif_cmake_flags[@]}" \
+            $HOST_CMAKE_FLAGS . )
+
+    if [[ -n "$IOS_SDK" ]]; then
+        # libavif's CMake configuration generates a meson cross file... but it
+        # doesn't work for iOS cross-compilation. Copy in Pillow-generated
+        # meson-cross config to replace the cmake-generated version.
+        cp $WORKDIR/meson-cross.txt $out_dir/crossfile-apple.meson
+    fi
+
+    (cd $out_dir && make -j4 install)
+
+    touch libavif-stamp
+}
+
+function build_zstd {
+    if [ -e zstd-stamp ]; then return; fi
+    local out_dir=$(fetch_unpack https://github.com/facebook/zstd/releases/download/v$ZSTD_VERSION/zstd-$ZSTD_VERSION.tar.gz)
+    (cd $out_dir \
+        && make -j4 install)
+    touch zstd-stamp
 }
 
 function build {
-    if [[ -n "$IS_MACOS" ]] && [[ "$CIBW_ARCHS" == "arm64" ]]; then
-        sudo chown -R runner /usr/local
-    fi
     build_xz
-    if [ -z "$IS_ALPINE" ] && [ -z "$IS_MACOS" ]; then
+    if [ -z "$IS_ALPINE" ] && [ -z "$SANITIZER" ] && [ -z "$IS_MACOS" ]; then
         yum remove -y zlib-devel
     fi
-    build_new_zlib
+    if [[ -n "$IS_MACOS" ]]; then
+        CFLAGS="$CFLAGS -headerpad_max_install_names" build_zlib_ng
+    else
+        build_zlib_ng
+    fi
 
     build_simple xcb-proto 1.17.0 https://xorg.freedesktop.org/archive/individual/proto
-    if [ -n "$IS_MACOS" ]; then
-        build_simple xorgproto 2024.1 https://www.x.org/pub/individual/proto
-        build_simple libXau 1.0.11 https://www.x.org/pub/individual/lib
+    if [[ -n "$IS_MACOS" ]]; then
+        build_simple xorgproto 2025.1 https://www.x.org/pub/individual/proto
+        build_simple libXau 1.0.12 https://www.x.org/pub/individual/lib
         build_simple libpthread-stubs 0.5 https://xcb.freedesktop.org/dist
-        if [[ "$CIBW_ARCHS" == "arm64" ]]; then
-            cp /usr/local/share/pkgconfig/xcb-proto.pc /usr/local/lib/pkgconfig
-        fi
     else
-        sed s/\${pc_sysrootdir\}// /usr/local/share/pkgconfig/xcb-proto.pc > /usr/local/lib/pkgconfig/xcb-proto.pc
+        sed "s/\${pc_sysrootdir\}//" $BUILD_PREFIX/share/pkgconfig/xcb-proto.pc > $BUILD_PREFIX/lib/pkgconfig/xcb-proto.pc
     fi
     build_simple libxcb $LIBXCB_VERSION https://www.x.org/releases/individual/lib
 
     build_libjpeg_turbo
-    build_tiff
+    if [[ -n "$IS_MACOS" ]]; then
+        # Custom tiff build to include jpeg; by default, configure won't include
+        # headers/libs in the custom macOS/iOS prefix. Explicitly disable webp,
+        # libdeflate and zstd, because on x86_64 macs, it will pick up the
+        # Homebrew versions of those libraries from /usr/local.
+        build_simple tiff $TIFF_VERSION https://download.osgeo.org/libtiff tar.gz \
+            --with-jpeg-include-dir=$BUILD_PREFIX/include --with-jpeg-lib-dir=$BUILD_PREFIX/lib \
+            --disable-webp --disable-libdeflate --disable-zstd
+    else
+        build_zstd
+        build_tiff
+    fi
+
+    build_libavif
     build_libpng
     build_lcms2
     build_openjpeg
-    if [ -f /usr/local/lib64/libopenjp2.so ]; then
-        cp /usr/local/lib64/libopenjp2.so /usr/local/lib
-    fi
 
-    ORIGINAL_CFLAGS=$CFLAGS
-    CFLAGS="$CFLAGS -O3 -DNDEBUG"
+    webp_cflags="-O3 -DNDEBUG"
     if [[ -n "$IS_MACOS" ]]; then
-        CFLAGS="$CFLAGS -Wl,-headerpad_max_install_names"
+        webp_cflags="$webp_cflags -Wl,-headerpad_max_install_names"
     fi
-    build_libwebp
-    CFLAGS=$ORIGINAL_CFLAGS
+    webp_ldflags=""
+    if [[ -n "$IOS_SDK" ]]; then
+        webp_ldflags="$webp_ldflags -llzma -lz"
+    fi
+    CFLAGS="$CFLAGS $webp_cflags" LDFLAGS="$LDFLAGS $webp_ldflags" build_simple libwebp $LIBWEBP_VERSION \
+        https://storage.googleapis.com/downloads.webmproject.org/releases/webp tar.gz \
+        --enable-libwebpmux --enable-libwebpdemux
 
     build_brotli
 
-    if [ -n "$IS_MACOS" ]; then
+    if [[ -n "$IS_MACOS" ]]; then
         # Custom freetype build
         build_simple freetype $FREETYPE_VERSION https://download.savannah.gnu.org/releases/freetype tar.gz --with-harfbuzz=no
     else
         build_freetype
     fi
 
-    if [ -z "$IS_MACOS" ]; then
-        export FREETYPE_LIBS=-lfreetype
-        export FREETYPE_CFLAGS=-I/usr/local/include/freetype2/
-    fi
-    build_simple harfbuzz $HARFBUZZ_VERSION https://github.com/harfbuzz/harfbuzz/releases/download/$HARFBUZZ_VERSION tar.xz --with-freetype=yes --with-glib=no
-    if [ -z "$IS_MACOS" ]; then
-        export FREETYPE_LIBS=""
-        export FREETYPE_CFLAGS=""
+    if [[ -z "$IOS_SDK" ]]; then
+        # On iOS, there's no vendor-provided raqm, and we can't ship it due to
+        # licensing, so there's no point building harfbuzz.
+        build_harfbuzz
     fi
 }
 
+function create_meson_cross_config {
+    cat << EOF > $WORKDIR/meson-cross.txt
+[binaries]
+pkg-config = '$BUILD_PREFIX/bin/pkg-config'
+cmake = '$(which cmake)'
+c = '$CC'
+cpp = '$CXX'
+strip = '$STRIP'
+
+[built-in options]
+c_args = '$CFLAGS -I$BUILD_PREFIX/include'
+cpp_args = '$CXXFLAGS -I$BUILD_PREFIX/include'
+c_link_args = '$CFLAGS -L$BUILD_PREFIX/lib'
+cpp_link_args = '$CFLAGS -L$BUILD_PREFIX/lib'
+
+[host_machine]
+system = 'darwin'
+subsystem = 'ios'
+kernel = 'xnu'
+cpu_family = '$(uname -m)'
+cpu = '$(uname -m)'
+endian = 'little'
+
+EOF
+}
+
+# Perform all dependency builds in the build subfolder.
+mkdir -p $WORKDIR
+pushd $WORKDIR > /dev/null
+
 # Any stuff that you need to do before you start building the wheels
 # Runs in the root directory of this repository.
-curl -fsSL -o pillow-depends-main.zip https://github.com/python-pillow/pillow-depends/archive/main.zip
-untar pillow-depends-main.zip
+if [[ ! -d $WORKDIR/pillow-depends-main ]]; then
+  if [[ ! -f $PROJECTDIR/pillow-depends-main.zip ]]; then
+    echo "Download pillow dependency sources..."
+    curl -fSL -o $PROJECTDIR/pillow-depends-main.zip https://github.com/python-pillow/pillow-depends/archive/main.zip
+  fi
+  echo "Unpacking pillow dependency sources..."
+  untar $PROJECTDIR/pillow-depends-main.zip
+fi
 
 if [[ -n "$IS_MACOS" ]]; then
-  # libtiff and libxcb cause a conflict with building libtiff and libxcb
-  # libxau and libxdmcp cause an issue on macOS < 11
-  # remove cairo to fix building harfbuzz on arm64
-  # remove lcms2 and libpng to fix building openjpeg on arm64
-  # remove jpeg-turbo to avoid inclusion on arm64
-  # remove webp and zstd to avoid inclusion on x86_64
-  # curl from brew requires zstd, use system curl
-  brew remove --ignore-dependencies libpng libtiff libxcb libxau libxdmcp curl cairo lcms2 zstd
-  if [[ "$CIBW_ARCHS" == "arm64" ]]; then
-    brew remove --ignore-dependencies jpeg-turbo
-  else
-    brew remove --ignore-dependencies webp
-  fi
+    # Ensure the basic structure of the build prefix directory exists.
+    mkdir -p "$BUILD_PREFIX/bin"
+    mkdir -p "$BUILD_PREFIX/lib"
 
-  brew install pkg-config
+    # Ensure pkg-config is available. This is done *before* setting CC, CFLAGS
+    # etc. to ensure that the build is *always* a macOS build, even when building
+    # for iOS.
+    build_pkg_config
+
+    # Ensure cmake is available, and that the default prefix used by CMake is
+    # the build prefix
+    python3 -m pip install cmake
+    export CMAKE_PREFIX_PATH=$BUILD_PREFIX
+
+    if [[ -n "$IOS_SDK" ]]; then
+        export AR="$(xcrun --find --sdk $IOS_SDK ar)"
+        export CPP="$(xcrun --find --sdk $IOS_SDK clang) -E"
+        export CC=$(xcrun --find --sdk $IOS_SDK clang)
+        export CXX=$(xcrun --find --sdk $IOS_SDK clang++)
+        export LD=$(xcrun --find --sdk $IOS_SDK ld)
+        export STRIP=$(xcrun --find --sdk $IOS_SDK strip)
+
+        CPPFLAGS="$CPPFLAGS --sysroot=$IOS_SDK_PATH"
+        CFLAGS="-target $IOS_HOST_TRIPLE --sysroot=$IOS_SDK_PATH -mios-version-min=$IPHONEOS_DEPLOYMENT_TARGET"
+        CXXFLAGS="-target $IOS_HOST_TRIPLE --sysroot=$IOS_SDK_PATH -mios-version-min=$IPHONEOS_DEPLOYMENT_TARGET"
+
+        # Having IPHONEOS_DEPLOYMENT_TARGET in the environment causes problems
+        # with some cross-building toolchains, because it introduces implicit
+        # behavior into clang.
+        unset IPHONEOS_DEPLOYMENT_TARGET
+
+        # Now that we know CC etc., we can create a meson cross-configuration file
+        create_meson_cross_config
+    fi
 fi
 
 wrap_wheel_builder build
 
+# A safety catch for iOS. iOS can't use dynamic libraries, but clang will prefer
+# to link dynamic libraries to static libraries. The only way to reliably
+# prevent this is to not have dynamic libraries available in the first place.
+# The build process *shouldn't* generate any dylibs... but just in case, purge
+# any dylibs that *have* been installed into the build prefix directory.
+if [[ -n "$IOS_SDK" ]]; then
+    find "$BUILD_PREFIX" -name "*.dylib" -exec rm -rf {} \;
+fi
+
+# Return to the project root to finish the build
+popd > /dev/null
+
 # Append licenses
 for filename in wheels/dependency_licenses/*; do
   echo -e "\n\n----\n\n$(basename $filename | cut -f 1 -d '.')\n" | cat >> LICENSE

.github/workflows/wheels-test.ps1

@@ -9,14 +9,18 @@ if ("$venv" -like "*\cibw-run-*\pp*-win_amd64\*") {
     C:\vc_redist.x64.exe /install /quiet /norestart | Out-Null
 }
 $env:path += ";$pillow\winbuild\build\bin\"
-& "$venv\Scripts\activate.ps1"
+if (Test-Path $venv\Scripts\pypy.exe) {
+  $python = "pypy.exe"
+} else {
+  $python = "python.exe"
+}
 & reg add "HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\python.exe" /v "GlobalFlag" /t REG_SZ /d "0x02000000" /f
 cd $pillow
-& python -VV
+& $venv\Scripts\$python -VV
 if (!$?) { exit $LASTEXITCODE }
-& python selftest.py
+& $venv\Scripts\$python selftest.py
 if (!$?) { exit $LASTEXITCODE }
-& python -m pytest -vx Tests\check_wheel.py
+& $venv\Scripts\$python -m pytest -vv -x checks\check_wheel.py
 if (!$?) { exit $LASTEXITCODE }
-& python -m pytest -vx Tests
+& $venv\Scripts\$python -m pytest -vv -x Tests
 if (!$?) { exit $LASTEXITCODE }

.github/workflows/wheels-test.sh

@@ -1,20 +1,29 @@
 #!/bin/bash
 set -e
 
+# Ensure fribidi is installed by the system.
 if [[ "$OSTYPE" == "darwin"* ]]; then
-    brew install fribidi
-    export PKG_CONFIG_PATH="/usr/local/opt/openblas/lib/pkgconfig"
-    if [ -f /opt/homebrew/lib/libfribidi.dylib ]; then
-        sudo cp /opt/homebrew/lib/libfribidi.dylib /usr/local/lib
+    # If Homebrew is on the path during the build, it may leak into the wheels.
+    # However, we *do* need Homebrew to provide a copy of fribidi for
+    # testing purposes so that we can verify the fribidi shim works as expected.
+    if [[ "$(uname -m)" == "x86_64" ]]; then
+        HOMEBREW_PREFIX=/usr/local
+    else
+        HOMEBREW_PREFIX=/opt/homebrew
     fi
+    $HOMEBREW_PREFIX/bin/brew install fribidi
+
+    # Add the lib folder for fribidi so that the vendored library can be found.
+    # Don't use $HOMEWBREW_PREFIX/lib directly - use the lib folder where the
+    # installed copy of fribidi is cellared. This ensures we don't pick up the
+    # Homebrew version of any other library that we're dependent on (most notably,
+    # freetype).
+    export DYLD_LIBRARY_PATH=$(dirname $(realpath $HOMEBREW_PREFIX/lib/libfribidi.dylib))
 elif [ "${AUDITWHEEL_POLICY::9}" == "musllinux" ]; then
     apk add curl fribidi
 else
     yum install -y fribidi
 fi
-if [ "${AUDITWHEEL_POLICY::9}" != "musllinux" ] && !([[ "$OSTYPE" == "darwin"* ]] && [[ $(python3 --version) == *"3.13."* ]]); then
-    python3 -m pip install numpy
-fi
 
 if [ ! -d "test-images-main" ]; then
     curl -fsSL -o pillow-test-images.zip https://github.com/python-pillow/test-images/archive/main.zip
@@ -24,5 +33,5 @@ fi
 
 # Runs tests
 python3 selftest.py
-python3 -m pytest Tests/check_wheel.py
-python3 -m pytest
+python3 -m pytest -vv -x checks/check_wheel.py
+python3 -m pytest -vv -x

.github/workflows/wheels.yml

@@ -1,10 +1,23 @@
 name: Wheels
 
 on:
+  schedule:
+  #        ┌───────────── minute (0 - 59)
+  #        │  ┌───────────── hour (0 - 23)
+  #        │  │ ┌───────────── day of the month (1 - 31)
+  #        │  │ │ ┌───────────── month (1 - 12 or JAN-DEC)
+  #        │  │ │ │ ┌───────────── day of the week (0 - 6 or SUN-SAT)
+  #        │  │ │ │ │
+  - cron: "42 1 * * 0,3"
   push:
-    paths:
+    paths: &paths
       - ".ci/requirements-cibw.txt"
-      - ".github/workflows/wheel*"
+      - ".ci/requirements-sbom.txt"
+      - ".github/compare-dist-sizes.py"
+      - ".github/dependencies.json"
+      - ".github/generate-sbom.py"
+      - ".github/workflows/wheels*"
+      - "pyproject.toml"
       - "setup.py"
       - "wheels/*"
       - "winbuild/build_prepare.py"
@@ -12,13 +25,7 @@ on:
     tags:
       - "*"
   pull_request:
-    paths:
-      - ".ci/requirements-cibw.txt"
-      - ".github/workflows/wheel*"
-      - "setup.py"
-      - "wheels/*"
-      - "winbuild/build_prepare.py"
-      - "winbuild/fribidi.cmake"
+    paths: *paths
   workflow_dispatch:
 
 permissions:
@@ -29,97 +36,80 @@ concurrency:
   cancel-in-progress: true
 
 env:
+  EXPECTED_DISTS: 66
   FORCE_COLOR: 1
 
 jobs:
-  build-1-QEMU-emulated-wheels:
-    name: aarch64 ${{ matrix.python-version }} ${{ matrix.spec }}
-    runs-on: ubuntu-latest
-    strategy:
-      fail-fast: false
-      matrix:
-        python-version:
-          - pp39
-          - pp310
-          - cp38
-          - cp39
-          - cp310
-          - cp311
-          - cp312
-          - cp313
-        spec:
-          - manylinux2014
-          - manylinux_2_28
-          - musllinux
-        exclude:
-          - { python-version: pp39, spec: musllinux }
-          - { python-version: pp310, spec: musllinux }
-
-    steps:
-      - uses: actions/checkout@v4
-        with:
-          submodules: true
-
-      - uses: actions/setup-python@v5
-        with:
-          python-version: "3.x"
-
-      # https://github.com/docker/setup-qemu-action
-      - name: Set up QEMU
-        uses: docker/setup-qemu-action@v3
-
-      - name: Install cibuildwheel
-        run: |
-          python3 -m pip install -r .ci/requirements-cibw.txt
-
-      - name: Build wheels
-        run: |
-          python3 -m cibuildwheel --output-dir wheelhouse
-        env:
-          # Build only the currently selected Linux architecture (so we can
-          # parallelise for speed).
-          CIBW_ARCHS: "aarch64"
-          # Likewise, select only one Python version per job to speed this up.
-          CIBW_BUILD: "${{ matrix.python-version }}-${{ matrix.spec == 'musllinux' && 'musllinux' || 'manylinux' }}*"
-          CIBW_PRERELEASE_PYTHONS: True
-          # Extra options for manylinux.
-          CIBW_MANYLINUX_AARCH64_IMAGE: ${{ matrix.spec }}
-          CIBW_MANYLINUX_PYPY_AARCH64_IMAGE: ${{ matrix.spec }}
-
-      - uses: actions/upload-artifact@v4
-        with:
-          name: dist-qemu-${{ matrix.python-version }}-${{ matrix.spec }}
-          path: ./wheelhouse/*.whl
-
-  build-2-native-wheels:
+  build-native-wheels:
+    if: github.event_name != 'schedule' || github.event.repository.fork == false
     name: ${{ matrix.name }}
     runs-on: ${{ matrix.os }}
     strategy:
       fail-fast: false
       matrix:
         include:
-          - name: "macOS x86_64"
-            os: macos-13
+          - name: "macOS 10.10 x86_64"
+            platform: macos
+            os: macos-26-intel
             cibw_arch: x86_64
+            build: "cp3{10,11}*"
             macosx_deployment_target: "10.10"
+          - name: "macOS 10.13 x86_64"
+            platform: macos
+            os: macos-26-intel
+            cibw_arch: x86_64
+            build: "cp3{12,13}*"
+            macosx_deployment_target: "10.13"
+          - name: "macOS 10.15 x86_64"
+            platform: macos
+            os: macos-26-intel
+            cibw_arch: x86_64
+            build: "{cp314,pp3}*"
+            macosx_deployment_target: "10.15"
           - name: "macOS arm64"
-            os: macos-14
+            platform: macos
+            os: macos-latest
             cibw_arch: arm64
             macosx_deployment_target: "11.0"
-          - name: "manylinux2014 and musllinux x86_64"
-            os: ubuntu-latest
-            cibw_arch: x86_64
           - name: "manylinux_2_28 x86_64"
+            platform: linux
             os: ubuntu-latest
             cibw_arch: x86_64
             build: "*manylinux*"
-            manylinux: "manylinux_2_28"
+          - name: "musllinux x86_64"
+            platform: linux
+            os: ubuntu-latest
+            cibw_arch: x86_64
+            build: "*musllinux*"
+          - name: "manylinux_2_28 aarch64"
+            platform: linux
+            os: ubuntu-24.04-arm
+            cibw_arch: aarch64
+            build: "*manylinux*"
+          - name: "musllinux aarch64"
+            platform: linux
+            os: ubuntu-24.04-arm
+            cibw_arch: aarch64
+            build: "*musllinux*"
+          - name: "iOS arm64 device"
+            platform: ios
+            os: macos-latest
+            cibw_arch: arm64_iphoneos
+          - name: "iOS arm64 simulator"
+            platform: ios
+            os: macos-latest
+            cibw_arch: arm64_iphonesimulator
+          - name: "iOS x86_64 simulator"
+            platform: ios
+            os: macos-26-intel
+            cibw_arch: x86_64_iphonesimulator
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
         with:
+          persist-credentials: false
           submodules: true
 
-      - uses: actions/setup-python@v5
+      - uses: actions/setup-python@a309ff8b426b58ec0e2a45f0f869d46889d02405 # v6.2.0
         with:
           python-version: "3.x"
 
@@ -131,40 +121,44 @@ jobs:
         run: |
           python3 -m cibuildwheel --output-dir wheelhouse
         env:
+          CIBW_PLATFORM: ${{ matrix.platform }}
           CIBW_ARCHS: ${{ matrix.cibw_arch }}
           CIBW_BUILD: ${{ matrix.build }}
-          CIBW_MANYLINUX_PYPY_X86_64_IMAGE: ${{ matrix.manylinux }}
-          CIBW_MANYLINUX_X86_64_IMAGE: ${{ matrix.manylinux }}
-          CIBW_PRERELEASE_PYTHONS: True
-          CIBW_SKIP: pp38-*
-          CIBW_TEST_SKIP: cp38-macosx_arm64
+          CIBW_ENABLE: cpython-prerelease pypy
           MACOSX_DEPLOYMENT_TARGET: ${{ matrix.macosx_deployment_target }}
 
-      - uses: actions/upload-artifact@v4
+      - uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a # v7.0.1
         with:
-          name: dist-${{ matrix.os }}-${{ matrix.cibw_arch }}${{ matrix.manylinux && format('-{0}', matrix.manylinux) }}
+          name: dist-${{ matrix.name }}
           path: ./wheelhouse/*.whl
 
   windows:
+    if: github.event_name != 'schedule' || github.event.repository.fork == false
     name: Windows ${{ matrix.cibw_arch }}
-    runs-on: windows-latest
+    runs-on: ${{ matrix.os }}
     strategy:
       fail-fast: false
       matrix:
         include:
           - cibw_arch: x86
+            os: windows-latest
           - cibw_arch: AMD64
+            os: windows-latest
           - cibw_arch: ARM64
+            os: windows-11-arm
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+        with:
+          persist-credentials: false
 
       - name: Checkout extra test images
-        uses: actions/checkout@v4
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
         with:
+          persist-credentials: false
           repository: python-pillow/test-images
           path: Tests\test-images
 
-      - uses: actions/setup-python@v5
+      - uses: actions/setup-python@a309ff8b426b58ec0e2a45f0f869d46889d02405 # v6.2.0
         with:
           python-version: "3.x"
 
@@ -185,30 +179,23 @@ jobs:
 
       - name: Build wheels
         run: |
-          setlocal EnableDelayedExpansion
-          for %%f in (winbuild\build\license\*) do (
-            set x=%%~nf
-            rem Skip FriBiDi license, it is not included in the wheel.
-            set fribidi=!x:~0,7!
-            if NOT !fribidi!==fribidi (
-              rem Skip imagequant license, it is not included in the wheel.
-              set libimagequant=!x:~0,13!
-              if NOT !libimagequant!==libimagequant (
-                echo. >> LICENSE
-                echo ===== %%~nf ===== >> LICENSE
-                echo. >> LICENSE
-                type %%f >> LICENSE
-              )
-            )
-          )
-          call winbuild\\build\\build_env.cmd
-          %pythonLocation%\python.exe -m cibuildwheel . --output-dir wheelhouse
+          for f in winbuild/build/license/*; do
+            name=$(basename "${f%.*}")
+            # Skip FriBiDi license, it is not included in the wheel.
+            [[ $name == fribidi* ]] && continue
+            # Skip imagequant license, it is not included in the wheel.
+            [[ $name == libimagequant* ]] && continue
+            echo "" >> LICENSE
+            echo "===== $name =====" >> LICENSE
+            echo "" >> LICENSE
+            cat "$f" >> LICENSE
+          done
+          cmd //c "winbuild\\build\\build_env.cmd && $pythonLocation\\python.exe -m cibuildwheel . --output-dir wheelhouse"
         env:
           CIBW_ARCHS: ${{ matrix.cibw_arch }}
           CIBW_BEFORE_ALL: "{package}\\winbuild\\build\\build_dep_all.cmd"
           CIBW_CACHE_PATH: "C:\\cibw"
-          CIBW_PRERELEASE_PYTHONS: True
-          CIBW_SKIP: pp38-*
+          CIBW_ENABLE: cpython-prerelease pypy
           CIBW_TEST_SKIP: "*-win_arm64"
           CIBW_TEST_COMMAND: 'docker run --rm
             -v {project}:C:\pillow
@@ -217,42 +204,151 @@ jobs:
             -e CI -e GITHUB_ACTIONS
             mcr.microsoft.com/windows/servercore:ltsc2022
             powershell C:\pillow\.github\workflows\wheels-test.ps1 %CD%\..\venv-test'
-        shell: cmd
+        shell: bash
 
       - name: Upload wheels
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a # v7.0.1
         with:
           name: dist-windows-${{ matrix.cibw_arch }}
           path: ./wheelhouse/*.whl
 
       - name: Upload fribidi.dll
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a # v7.0.1
         with:
           name: fribidi-windows-${{ matrix.cibw_arch }}
           path: winbuild\build\bin\fribidi*
 
   sdist:
+    if: github.event_name != 'schedule' || github.event.repository.fork == false
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+      with:
+        persist-credentials: false
 
     - name: Set up Python
-      uses: actions/setup-python@v5
+      uses: actions/setup-python@a309ff8b426b58ec0e2a45f0f869d46889d02405 # v6.2.0
       with:
         python-version: "3.x"
-        cache: pip
-        cache-dependency-path: "Makefile"
 
     - run: make sdist
 
-    - uses: actions/upload-artifact@v4
+    - uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a # v7.0.1
       with:
         name: dist-sdist
         path: dist/*.tar.gz
 
+  count-dists:
+    needs: [build-native-wheels, windows, sdist]
+    runs-on: ubuntu-latest
+    name: Count dists
+    steps:
+      - uses: actions/download-artifact@3e5f45b2cfb9172054b4087a40e8e0b5a5461e7c # v8.0.1
+        with:
+          pattern: dist-*
+          path: dist
+          merge-multiple: true
+      - name: "What did we get?"
+        run: |
+          ls -alR
+          echo "Number of dists, should be $EXPECTED_DISTS:"
+          files=$(ls dist 2>/dev/null | wc -l)
+          echo $files
+          [ "$files" -eq $EXPECTED_DISTS ] || exit 1
+
+  compare-dist-sizes:
+    needs: [build-native-wheels, windows, sdist]
+    runs-on: ubuntu-latest
+    name: Compare dist sizes vs PyPI
+    steps:
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+        with:
+          persist-credentials: false
+
+      - uses: astral-sh/setup-uv@08807647e7069bb48b6ef5acd8ec9567f424441b # v8.1.0
+        with:
+          enable-cache: false
+
+      - uses: actions/download-artifact@3e5f45b2cfb9172054b4087a40e8e0b5a5461e7c # v8.0.1
+        with:
+          pattern: dist-*
+          path: dist
+          merge-multiple: true
+
+      - name: Compare dist sizes vs latest PyPI release
+        run: uv run .github/compare-dist-sizes.py dist
+
+  scientific-python-nightly-wheels-publish:
+    if: github.event.repository.fork == false && (github.event_name == 'schedule' || github.event_name == 'workflow_dispatch')
+    needs: count-dists
+    runs-on: ubuntu-latest
+    name: Upload wheels to scientific-python-nightly-wheels
+    environment:
+      name: release-anaconda
+      url: https://anaconda.org/channels/scientific-python-nightly-wheels/packages/pillow/overview
+    steps:
+      - uses: actions/download-artifact@3e5f45b2cfb9172054b4087a40e8e0b5a5461e7c # v8.0.1
+        with:
+          pattern: dist-!(sdist)*
+          path: dist
+          merge-multiple: true
+      - name: Upload wheels to scientific-python-nightly-wheels
+        uses: scientific-python/upload-nightly-action@e76cfec8a4611fd02808a801b0ff5a7d7c1b2d99 # 0.6.4
+        with:
+          artifacts_path: dist
+          anaconda_nightly_upload_token: ${{ secrets.ANACONDA_ORG_UPLOAD_TOKEN }}
+
+  sbom:
+    if: github.event_name != 'schedule' || github.event.repository.fork == false
+    runs-on: ubuntu-latest
+    name: Generate SBOM
+    steps:
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+        with:
+          persist-credentials: false
+
+      - uses: actions/setup-python@a309ff8b426b58ec0e2a45f0f869d46889d02405 # v6.2.0
+        with:
+          python-version: "3.x"
+
+      - name: Generate CycloneDX SBOM
+        run: python3 .github/generate-sbom.py
+
+      - name: Upload SBOM as workflow artifact
+        uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a # v7.0.1
+        with:
+          name: sbom
+          path: "pillow-*.cdx.json"
+
+      - name: Validate SBOM
+        run: |
+          python3 -m pip install -r .ci/requirements-sbom.txt
+          check-jsonschema --schemafile "https://raw.githubusercontent.com/CycloneDX/specification/1.7/schema/bom-1.7.schema.json" pillow-*.cdx.json
+
+  sbom-publish:
+    if: |
+      github.event.repository.fork == false
+      && github.event_name == 'push'
+      && startsWith(github.ref, 'refs/tags')
+    needs: [count-dists, sbom]
+    runs-on: ubuntu-latest
+    name: Publish SBOM to GitHub release
+    permissions:
+      contents: write
+    steps:
+      - uses: actions/download-artifact@3e5f45b2cfb9172054b4087a40e8e0b5a5461e7c # v8.0.1
+        with:
+          name: sbom
+          path: .
+
+      - name: Attach SBOM to GitHub release
+        env:
+          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        run: gh release upload "$GITHUB_REF_NAME" pillow-*.cdx.json
+
   pypi-publish:
-    if: github.event_name == 'push' && startsWith(github.ref, 'refs/tags')
-    needs: [build-1-QEMU-emulated-wheels, build-2-native-wheels, windows, sdist]
+    if: github.event.repository.fork == false && github.event_name == 'push' && startsWith(github.ref, 'refs/tags')
+    needs: count-dists
     runs-on: ubuntu-latest
     name: Upload release to PyPI
     environment:
@@ -261,10 +357,12 @@ jobs:
     permissions:
       id-token: write
     steps:
-      - uses: actions/download-artifact@v4
+      - uses: actions/download-artifact@3e5f45b2cfb9172054b4087a40e8e0b5a5461e7c # v8.0.1
         with:
           pattern: dist-*
           path: dist
           merge-multiple: true
       - name: Publish to PyPI
-        uses: pypa/gh-action-pypi-publish@release/v1
+        uses: pypa/gh-action-pypi-publish@cef221092ed1bacb1cc03d23a2d87d1d172e277b # v1.14.0
+        with:
+          attestations: true

.gitignore

@@ -19,6 +19,7 @@ lib64/
 parts/
 sdist/
 var/
+wheelhouse/
 *.egg-info/
 .installed.cfg
 *.egg
@@ -90,5 +91,12 @@ Tests/images/msp
 Tests/images/picins
 Tests/images/sunraster
 
+# Test and dependency downloads
+pillow-depends-main.zip
+pillow-test-images.zip
+
 # pyinstaller
 *.spec
+
+# Generated SBOM
+pillow-*.cdx.json

.pre-commit-config.yaml

@@ -1,30 +1,30 @@
 repos:
   - repo: https://github.com/astral-sh/ruff-pre-commit
-    rev: v0.4.7
+    rev: v0.15.12
     hooks:
-      - id: ruff
+      - id: ruff-check
         args: [--exit-non-zero-on-fix]
 
   - repo: https://github.com/psf/black-pre-commit-mirror
-    rev: 24.4.2
+    rev: 26.3.1
     hooks:
       - id: black
 
   - repo: https://github.com/PyCQA/bandit
-    rev: 1.7.8
+    rev: 1.9.4
     hooks:
     - id: bandit
       args: [--severity-level=high]
       files: ^src/
 
   - repo: https://github.com/Lucas-C/pre-commit-hooks
-    rev: v1.5.5
+    rev: v1.5.6
     hooks:
       - id: remove-tabs
         exclude: (Makefile$|\.bat$|\.cmake$|\.eps$|\.fits$|\.gd$|\.opt$)
 
   - repo: https://github.com/pre-commit/mirrors-clang-format
-    rev: v18.1.5
+    rev: v22.1.4
     hooks:
       - id: clang-format
         types: [c]
@@ -36,43 +36,53 @@ repos:
       - id: rst-backticks
 
   - repo: https://github.com/pre-commit/pre-commit-hooks
-    rev: v4.6.0
+    rev: v6.0.0
     hooks:
+      - id: check-case-conflict
       - id: check-executables-have-shebangs
       - id: check-shebang-scripts-are-executable
       - id: check-merge-conflict
       - id: check-json
       - id: check-toml
       - id: check-yaml
+        args: [--allow-multiple-documents]
       - id: end-of-file-fixer
         exclude: ^Tests/images/
+      - id: file-contents-sorter
+        files: .github/workflows/Brewfile
       - id: trailing-whitespace
-        exclude: ^.github/.*TEMPLATE|^Tests/(fonts|images)/
+        exclude: ^\.github/.*TEMPLATE|^Tests/(fonts|images)/
 
   - repo: https://github.com/python-jsonschema/check-jsonschema
-    rev: 0.28.4
+    rev: 0.37.2
     hooks:
       - id: check-github-workflows
       - id: check-readthedocs
       - id: check-renovate
 
+  - repo: https://github.com/zizmorcore/zizmor-pre-commit
+    rev: v1.24.1
+    hooks:
+      - id: zizmor
+
   - repo: https://github.com/sphinx-contrib/sphinx-lint
-    rev: v0.9.1
+    rev: v1.0.2
     hooks:
       - id: sphinx-lint
 
   - repo: https://github.com/tox-dev/pyproject-fmt
-    rev: 1.8.0
+    rev: v2.21.1
     hooks:
       - id: pyproject-fmt
 
   - repo: https://github.com/abravalheri/validate-pyproject
-    rev: v0.18
+    rev: v0.25
     hooks:
       - id: validate-pyproject
+        additional_dependencies: [trove-classifiers>=2024.10.12]
 
   - repo: https://github.com/tox-dev/tox-ini-fmt
-    rev: 1.3.1
+    rev: 1.7.1
     hooks:
       - id: tox-ini-fmt
 

.readthedocs.yml

@@ -1,5 +1,8 @@
 version: 2
 
+sphinx:
+  configuration: docs/conf.py
+
 formats: [pdf]
 
 build:

CHANGES.rst

@@ -2,6 +2,181 @@
 Changelog (Pillow)
 ==================
 
+11.1.0 and newer
+----------------
+
+See GitHub Releases:
+
+- https://github.com/python-pillow/Pillow/releases
+
+11.0.0 (2024-10-15)
+-------------------
+
+- Update licence to MIT-CMU #8460
+  [hugovk]
+
+- Conditionally define ImageCms type hint to avoid requiring core #8197
+  [radarhere]
+
+- Support writing LONG8 offsets in AppendingTiffWriter #8417
+  [radarhere]
+
+- Use ImageFile.MAXBLOCK when saving TIFF images #8461
+  [radarhere]
+
+- Do not close provided file handles with libtiff when saving #8458
+  [radarhere]
+
+- Support ImageFilter.BuiltinFilter for I;16* images #8438
+  [radarhere]
+
+- Use ImagingCore.ptr instead of ImagingCore.id #8341
+  [homm, radarhere, hugovk]
+
+- Updated EPS mode when opening images without transparency #8281
+  [Yay295, radarhere]
+
+- Use transparency when combining P frames from APNGs #8443
+  [radarhere]
+
+- Support all resampling filters when resizing I;16* images #8422
+  [radarhere]
+
+- Free memory on early return #8413
+  [radarhere]
+
+- Cast int before potentially exceeding INT_MAX #8402
+  [radarhere]
+
+- Check image value before use #8400
+  [radarhere]
+
+- Improved copying imagequant libraries #8420
+  [radarhere]
+
+- Use Capsule for WebP saving #8386
+  [homm, radarhere]
+
+- Fixed writing multiple StripOffsets to TIFF #8317
+  [Yay295, radarhere]
+
+- Fix dereference before checking for NULL in ImagingTransformAffine #8398
+  [PavlNekrasov]
+
+- Use transposed size after opening for TIFF images #8390
+  [radarhere, homm]
+
+- Improve ImageFont error messages #8338
+  [yngvem, radarhere, hugovk]
+
+- Mention MAX_TEXT_CHUNK limit in PNG error message #8391
+  [radarhere]
+
+- Cast Dib handle to int #8385
+  [radarhere]
+
+- Accept float stroke widths #8369
+  [radarhere]
+
+- Deprecate ICNS (width, height, scale) sizes in favour of load(scale) #8352
+  [radarhere]
+
+- Improved handling of RGBA palettes when saving GIF images #8366
+  [radarhere]
+
+- Deprecate isImageType #8364
+  [radarhere]
+
+- Support converting more modes to LAB by converting to RGBA first #8358
+  [radarhere]
+
+- Deprecate support for FreeType 2.9.0 #8356
+  [hugovk, radarhere]
+
+- Removed unused TiffImagePlugin IFD_LEGACY_API #8355
+  [radarhere]
+
+- Handle duplicate EXIF header #8350
+  [zakajd, radarhere]
+
+- Return early from BoxBlur if either width or height is zero #8347
+  [radarhere]
+
+- Check text is either string or bytes #8308
+  [radarhere]
+
+- Added writing XMP bytes to JPEG #8286
+  [radarhere]
+
+- Support JPEG2000 RGBA palettes #8256
+  [radarhere]
+
+- Expand C image to match GIF frame image size #8237
+  [radarhere]
+
+- Allow saving I;16 images as PPM #8231
+  [radarhere]
+
+- When IFD is missing, connect get_ifd() dictionary to Exif #8230
+  [radarhere]
+
+- Skip truncated ICO mask if LOAD_TRUNCATED_IMAGES is enabled #8180
+  [radarhere]
+
+- Treat unknown JPEG2000 colorspace as unspecified #8343
+  [radarhere]
+
+- Updated error message when saving WebP with invalid width or height #8322
+  [radarhere, hugovk]
+
+- Remove warning if NumPy failed to raise an error during conversion #8326
+  [radarhere]
+
+- If left and right sides meet in ImageDraw.rounded_rectangle(), do not draw rectangle to fill gap #8304
+  [radarhere]
+
+- Remove WebP support without anim, mux/demux, and with buggy alpha #8213
+  [homm, radarhere]
+
+- Add missing TIFF CMYK;16B reader #8298
+  [homm]
+
+- Remove all WITH_* flags from _imaging.c and other flags #8211
+  [homm]
+
+- Improve ImageDraw2 shape methods #8265
+  [radarhere]
+
+- Lock around usages of imaging memory arenas #8238
+  [lysnikolaou]
+
+- Deprecate JpegImageFile huffman_ac and huffman_dc #8274
+  [radarhere]
+
+- Deprecate ImageMath lambda_eval and unsafe_eval options argument #8242
+  [radarhere]
+
+- Changed ContainerIO to subclass IO #8240
+  [radarhere]
+
+- Move away from APIs that use borrowed references under the free-threaded build #8216
+  [hugovk, lysnikolaou]
+
+- Allow size argument to resize() to be a NumPy array #8201
+  [radarhere]
+
+- Drop support for Python 3.8 #8183
+  [hugovk, radarhere]
+
+- Add support for Python 3.13 #8181
+  [hugovk, radarhere]
+
+- Fix incompatibility with NumPy 1.20 #8187
+  [neutrinoceros, radarhere]
+
+- Remove PSFile, PyAccess and USE_CFFI_ACCESS #8182
+  [hugovk, radarhere]
+
 10.4.0 (2024-07-01)
 -------------------
 

LICENSE

@@ -5,9 +5,9 @@ The Python Imaging Library (PIL) is
 
 Pillow is the friendly PIL fork. It is
 
-    Copyright © 2010-2024 by Jeffrey A. Clark and contributors
+    Copyright © 2010 by Jeffrey 'Alex' Clark and contributors
 
-Like PIL, Pillow is licensed under the open source HPND License:
+Like PIL, Pillow is licensed under the open source MIT-CMU License:
 
 By obtaining, using, and/or copying this software and/or its associated
 documentation, you agree that you have read, understood, and will comply

MANIFEST.in

@@ -13,6 +13,8 @@ include LICENSE
 include Makefile
 include tox.ini
 graft Tests
+graft Tests/images
+graft checks
 graft src
 graft depends
 graft winbuild
@@ -20,15 +22,25 @@ graft docs
 graft _custom_build
 
 # build/src control detritus
-exclude .appveyor.yml
 exclude .clang-format
 exclude .coveragerc
 exclude .editorconfig
 exclude .readthedocs.yml
 exclude codecov.yml
 exclude renovate.json
+exclude Tests/images/README.md
+exclude Tests/images/crash*.tif
+exclude Tests/images/string_dimension.tiff
 global-exclude .git*
 global-exclude *.pyc
 global-exclude *.so
 prune .ci
 prune wheels
+prune winbuild/build
+prune winbuild/depends
+prune Tests/errors
+prune Tests/images/jpeg2000
+prune Tests/images/msp
+prune Tests/images/picins
+prune Tests/images/sunraster
+prune Tests/test-images

Makefile

@@ -17,14 +17,16 @@ coverage:
 .PHONY: doc
 .PHONY: html
 doc html:
-	python3 -c "import PIL" > /dev/null 2>&1 || python3 -m pip install .
 	$(MAKE) -C docs html
 
 .PHONY: htmlview
 htmlview:
-	python3 -c "import PIL" > /dev/null 2>&1 || python3 -m pip install .
 	$(MAKE) -C docs htmlview
 
+.PHONY: htmllive
+htmllive:
+	$(MAKE) -C docs htmllive
+
 .PHONY: doccheck
 doccheck:
 	$(MAKE) doc
@@ -45,6 +47,7 @@ help:
 	@echo "  docserve           run an HTTP server on the docs directory"
 	@echo "  html               make HTML docs"
 	@echo "  htmlview           open the index page built by the html target in your browser"
+	@echo "  htmllive           rebuild and reload HTML files in your browser"
 	@echo "  install            make and install"
 	@echo "  install-coverage   make and install with C coverage"
 	@echo "  lint               run the lint checks"
@@ -72,7 +75,7 @@ debug:
 
 .PHONY: release-test
 release-test:
-	python3 Tests/check_release_notes.py
+	python3 checks/check_release_notes.py
 	python3 -m pip install -e .[tests]
 	python3 selftest.py
 	python3 -m pytest Tests
@@ -94,13 +97,27 @@ test:
 	python3 -c "import pytest" > /dev/null 2>&1 || python3 -m pip install pytest
 	python3 -m pytest -qq
 
+.PHONY: test-p
+test-p:
+	python3 -c "import xdist" > /dev/null 2>&1 || python3 -m pip install pytest-xdist
+	python3 -m pytest -qq -n auto
+
+
 .PHONY: valgrind
 valgrind:
 	python3 -c "import pytest_valgrind" > /dev/null 2>&1 || python3 -m pip install pytest-valgrind
-	PYTHONMALLOC=malloc valgrind --suppressions=Tests/oss-fuzz/python.supp --leak-check=no \
+	PILLOW_VALGRIND_TEST=true PYTHONMALLOC=malloc valgrind --suppressions=Tests/oss-fuzz/python.supp --leak-check=no \
             --log-file=/tmp/valgrind-output \
             python3 -m pytest --no-memcheck -vv --valgrind --valgrind-log=/tmp/valgrind-output
 
+.PHONY: valgrind-leak
+valgrind-leak:
+	python3 -c "import pytest_valgrind" > /dev/null 2>&1 || python3 -m pip install pytest-valgrind
+	PILLOW_VALGRIND_TEST=true PYTHONMALLOC=malloc valgrind --suppressions=Tests/oss-fuzz/python.supp \
+	    --leak-check=full --show-leak-kinds=definite --errors-for-leak-kinds=definite \
+            --log-file=/tmp/valgrind-output \
+            python3 -m pytest -vv --valgrind --valgrind-log=/tmp/valgrind-output
+
 .PHONY: readme
 readme:
 	python3 -c "import markdown2" > /dev/null 2>&1 || python3 -m pip install markdown2
@@ -117,7 +134,7 @@ lint-fix:
 	python3 -c "import black" > /dev/null 2>&1 || python3 -m pip install black
 	python3 -m black .
 	python3 -c "import ruff" > /dev/null 2>&1 || python3 -m pip install ruff
-	python3 -m ruff --fix .
+	python3 -m ruff check --fix .
 
 .PHONY: mypy
 mypy:

README.md

@@ -6,11 +6,13 @@
 
 ## Python Imaging Library (Fork)
 
-Pillow is the friendly PIL fork by [Jeffrey A. Clark and
+Pillow is the friendly PIL fork by [Jeffrey 'Alex' Clark and
 contributors](https://github.com/python-pillow/Pillow/graphs/contributors).
 PIL is the Python Imaging Library by Fredrik Lundh and contributors.
-As of 2019, Pillow development is
-[supported by Tidelift](https://tidelift.com/subscription/pkg/pypi-pillow?utm_source=pypi-pillow&utm_medium=readme&utm_campaign=enterprise).
+Development is supported by:
+- [Tidelift](https://tidelift.com/subscription/pkg/pypi-pillow?utm_source=pypi-pillow&utm_medium=readme&utm_campaign=enterprise) (since 2018)
+- [Thanks.dev](https://thanks.dev) (since 2023)
+- [GitHub Sponsors](https://github.com/sponsors/python-pillow) (since 2026)
 
 <table>
     <tr>
@@ -36,22 +38,16 @@ As of 2019, Pillow development is
             <a href="https://github.com/python-pillow/Pillow/actions/workflows/test-mingw.yml"><img
                 alt="GitHub Actions build status (Test MinGW)"
                 src="https://github.com/python-pillow/Pillow/workflows/Test%20MinGW/badge.svg"></a>
-            <a href="https://github.com/python-pillow/Pillow/actions/workflows/test-cygwin.yml"><img
-                alt="GitHub Actions build status (Test Cygwin)"
-                src="https://github.com/python-pillow/Pillow/workflows/Test%20Cygwin/badge.svg"></a>
             <a href="https://github.com/python-pillow/Pillow/actions/workflows/test-docker.yml"><img
                 alt="GitHub Actions build status (Test Docker)"
                 src="https://github.com/python-pillow/Pillow/workflows/Test%20Docker/badge.svg"></a>
-            <a href="https://ci.appveyor.com/project/python-pillow/Pillow"><img
-                alt="AppVeyor CI build status (Windows)"
-                src="https://img.shields.io/appveyor/build/python-pillow/Pillow/main.svg?label=Windows%20build"></a>
             <a href="https://github.com/python-pillow/Pillow/actions/workflows/wheels.yml"><img
                 alt="GitHub Actions build status (Wheels)"
                 src="https://github.com/python-pillow/Pillow/workflows/Wheels/badge.svg"></a>
             <a href="https://app.codecov.io/gh/python-pillow/Pillow"><img
                 alt="Code coverage"
                 src="https://codecov.io/gh/python-pillow/Pillow/branch/main/graph/badge.svg"></a>
-            <a href="https://bugs.chromium.org/p/oss-fuzz/issues/list?sort=-opened&can=1&q=proj:pillow"><img
+            <a href="https://issues.oss-fuzz.com/issues?q=title:pillow"><img
                 alt="Fuzzing Status"
                 src="https://oss-fuzz-build-logs.storage.googleapis.com/badges/pillow.svg"></a>
         </td>
@@ -98,7 +94,7 @@ This library provides extensive file format support, an efficient internal repre
 
 The core image library is designed for fast access to data stored in a few basic pixel formats. It should provide a solid foundation for a general image processing tool.
 
-## More Information
+## More information
 
 - [Documentation](https://pillow.readthedocs.io/)
   - [Installation](https://pillow.readthedocs.io/en/latest/installation/basic-installation.html)
@@ -107,9 +103,13 @@ The core image library is designed for fast access to data stored in a few basic
   - [Issues](https://github.com/python-pillow/Pillow/issues)
   - [Pull requests](https://github.com/python-pillow/Pillow/pulls)
 - [Release notes](https://pillow.readthedocs.io/en/stable/releasenotes/index.html)
-- [Changelog](https://github.com/python-pillow/Pillow/blob/main/CHANGES.rst)
+- [Changelog](https://github.com/python-pillow/Pillow/releases)
   - [Pre-fork](https://github.com/python-pillow/Pillow/blob/main/CHANGES.rst#pre-fork)
 
-## Report a Vulnerability
+## Report a vulnerability
 
-To report a security vulnerability, please follow the procedure described in the [Tidelift security policy](https://tidelift.com/docs/security).
+To report sensitive vulnerability information, report it [privately on GitHub](https://github.com/python-pillow/Pillow/security/advisories/new).
+
+If you cannot use GitHub, use the [Tidelift security contact](https://tidelift.com/security). Tidelift will coordinate the fix and disclosure.
+
+DO NOT report sensitive vulnerability information in public.

RELEASING.md

@@ -1,46 +1,26 @@
-# Release Checklist
+# Release checklist
 
 See https://pillow.readthedocs.io/en/stable/releasenotes/versioning.html for
 information about how the version numbers line up with releases.
 
-## Main Release
+## Main release
 
 Released quarterly on January 2nd, April 1st, July 1st and October 15th.
 
-* [ ] Open a release ticket e.g. https://github.com/python-pillow/Pillow/issues/3154
-* [ ] Develop and prepare release in `main` branch.
-* [ ] Check [GitHub Actions](https://github.com/python-pillow/Pillow/actions) and [AppVeyor](https://ci.appveyor.com/project/python-pillow/Pillow) to confirm passing tests in `main` branch.
-* [ ] Check that all the wheel builds pass the tests in the [GitHub Actions "Wheels" workflow](https://github.com/python-pillow/Pillow/actions/workflows/wheels.yml) jobs by manually triggering them.
-* [ ] In compliance with [PEP 440](https://peps.python.org/pep-0440/), update version identifier in `src/PIL/_version.py`
-* [ ] Update `CHANGES.rst`.
-* [ ] Run pre-release check via `make release-test` in a freshly cloned repo.
-* [ ] Create branch and tag for release e.g.:
-  ```bash
-  git branch 5.2.x
-  git tag 5.2.0
-  git push --tags
-  ```
-* [ ] Check the [GitHub Actions "Wheels" workflow](https://github.com/python-pillow/Pillow/actions/workflows/wheels.yml)
-  has passed, including the "Upload release to PyPI" job. This will have been triggered
-  by the new tag.
-* [ ] Publish the [release on GitHub](https://github.com/python-pillow/Pillow/releases).
-* [ ] In compliance with [PEP 440](https://peps.python.org/pep-0440/),
-      increment and append `.dev0` to version identifier in `src/PIL/_version.py` and then:
-  ```bash
-  git push --all
-   ```
-## Point Release
+* [ ] Create a new issue and select the "Maintainers only: Release" template.
+
+## Point release
 
 Released as needed for security, installation or critical bug fixes.
 
 * [ ] Make necessary changes in `main` branch.
-* [ ] Update `CHANGES.rst`.
 * [ ] Check out release branch e.g.:
   ```bash
   git checkout -t remotes/origin/5.2.x
   ```
 * [ ] Cherry pick individual commits from `main` branch to release branch e.g. `5.2.x`, then `git push`.
-* [ ] Check [GitHub Actions](https://github.com/python-pillow/Pillow/actions) and [AppVeyor](https://ci.appveyor.com/project/python-pillow/Pillow) to confirm passing tests in release branch e.g. `5.2.x`.
+* [ ] If this is a security fix: amend commits to include the CVE identifier in the commit message.
+* [ ] Check [GitHub Actions](https://github.com/python-pillow/Pillow/actions) to confirm passing tests in release branch e.g. `5.2.x`.
 * [ ] In compliance with [PEP 440](https://peps.python.org/pep-0440/), update version identifier in `src/PIL/_version.py`
 * [ ] Run pre-release check via `make release-test`.
 * [ ] Create tag for release e.g.:
@@ -59,8 +39,9 @@ Released as needed for security, installation or critical bug fixes.
   ```bash
   git push
   ```
+* [ ] If this is a security fix: publish the [GitHub Security Advisory or Advisories](https://github.com/python-pillow/Pillow/security/advisories).
 
-## Embargoed Release
+## Embargoed release
 
 Released as needed privately to individual vendors for critical security-related bug fixes.
 
@@ -84,7 +65,7 @@ Released as needed privately to individual vendors for critical security-related
   git push origin 2.5.x
   ```
 
-## Publicize Release
+## Publicize release
 
 * [ ] Announce release availability via [Mastodon](https://fosstodon.org/@pillow) e.g. https://fosstodon.org/@pillow/110639450470725321
 
@@ -92,7 +73,7 @@ Released as needed privately to individual vendors for critical security-related
 
 * [ ] Make sure the [default version for Read the Docs](https://pillow.readthedocs.io/en/stable/) is up-to-date with the release changes
 
-## Docker Images
+## Docker images
 
 * [ ] Update Pillow in the Docker Images repository
   ```bash

Tests/README.rst

@@ -1,4 +1,4 @@
-Pillow Tests
+Pillow tests
 ============
 
 Test scripts are named ``test_xxx.py``. Helper classes and functions can be found in ``helper.py``.

Tests/bench_cffi_access.py

@@ -1,54 +0,0 @@
-from __future__ import annotations
-
-import time
-
-from PIL import PyAccess
-
-from .helper import hopper
-
-# Not running this test by default. No DOS against CI.
-
-
-def iterate_get(size, access) -> None:
-    (w, h) = size
-    for x in range(w):
-        for y in range(h):
-            access[(x, y)]
-
-
-def iterate_set(size, access) -> None:
-    (w, h) = size
-    for x in range(w):
-        for y in range(h):
-            access[(x, y)] = (x % 256, y % 256, 0)
-
-
-def timer(func, label, *args) -> None:
-    iterations = 5000
-    starttime = time.time()
-    for x in range(iterations):
-        func(*args)
-        if time.time() - starttime > 10:
-            break
-    endtime = time.time()
-    print(
-        f"{label}: completed {x + 1} iterations in {endtime - starttime:.4f}s, "
-        f"{(endtime - starttime) / (x + 1.0):.6f}s per iteration"
-    )
-
-
-def test_direct() -> None:
-    im = hopper()
-    im.load()
-    # im = Image.new("RGB", (2000, 2000), (1, 3, 2))
-    caccess = im.im.pixel_access(False)
-    access = PyAccess.new(im, False)
-
-    assert access is not None
-    assert caccess[(0, 0)] == access[(0, 0)]
-
-    print(f"Size: {im.width}x{im.height}")
-    timer(iterate_get, "PyAccess - get", im.size, access)
-    timer(iterate_set, "PyAccess - set", im.size, access)
-    timer(iterate_get, "C-api - get", im.size, caccess)
-    timer(iterate_set, "C-api - set", im.size, caccess)

Tests/check_wheel.py

@@ -1,43 +0,0 @@
-from __future__ import annotations
-
-import sys
-
-from PIL import features
-
-
-def test_wheel_modules() -> None:
-    expected_modules = {"pil", "tkinter", "freetype2", "littlecms2", "webp"}
-
-    # tkinter is not available in cibuildwheel installed CPython on Windows
-    try:
-        import tkinter
-
-        assert tkinter
-    except ImportError:
-        expected_modules.remove("tkinter")
-
-    assert set(features.get_supported_modules()) == expected_modules
-
-
-def test_wheel_codecs() -> None:
-    expected_codecs = {"jpg", "jpg_2000", "zlib", "libtiff"}
-
-    assert set(features.get_supported_codecs()) == expected_codecs
-
-
-def test_wheel_features() -> None:
-    expected_features = {
-        "webp_anim",
-        "webp_mux",
-        "transp_webp",
-        "raqm",
-        "fribidi",
-        "harfbuzz",
-        "libjpeg_turbo",
-        "xcb",
-    }
-
-    if sys.platform == "win32":
-        expected_features.remove("xcb")
-
-    assert set(features.get_supported_features()) == expected_features

Tests/conftest.py

@@ -1,9 +1,17 @@
 from __future__ import annotations
 
 import io
+import sys
+import sysconfig
 
 import pytest
 
+FREE_THREADED_BUILD = bool(sysconfig.get_config_var("Py_GIL_DISABLED"))
+
+gil_enabled_at_start = True
+if FREE_THREADED_BUILD:
+    gil_enabled_at_start = sys._is_gil_enabled()  # type: ignore[attr-defined]
+
 
 def pytest_report_header(config: pytest.Config) -> str:
     try:
@@ -16,6 +24,25 @@ def pytest_report_header(config: pytest.Config) -> str:
         return f"pytest_report_header failed: {e}"
 
 
+def pytest_terminal_summary(terminalreporter: pytest.TerminalReporter) -> None:
+    if (
+        FREE_THREADED_BUILD
+        and not gil_enabled_at_start
+        and sys._is_gil_enabled()  # type: ignore[attr-defined]
+    ):
+        tr = terminalreporter
+        tr.ensure_newline()
+        tr.section("GIL re-enabled", red=True, bold=True)
+        tr.line("The GIL was re-enabled at runtime during the tests.")
+        tr.line("This can happen with no test failures if the RuntimeWarning")
+        tr.line("raised by Python when this happens is filtered by a test.")
+        tr.line("")
+        tr.line("Please ensure all new C modules declare support for running")
+        tr.line("without the GIL. Any new tests that intentionally imports")
+        tr.line("code that re-enables the GIL should do so in a subprocess.")
+        pytest.exit("GIL re-enabled during tests", returncode=1)
+
+
 def pytest_configure(config: pytest.Config) -> None:
     config.addinivalue_line(
         "markers",

Tests/createfontdatachunk.py

@@ -1,4 +1,3 @@
-#!/usr/bin/env python3
 from __future__ import annotations
 
 import base64

Tests/fonts/LICENSE.txt

@@ -2,7 +2,7 @@
 NotoNastaliqUrdu-Regular.ttf and NotoSansSymbols-Regular.ttf, from https://github.com/googlei18n/noto-fonts
 NotoSans-Regular.ttf, from https://www.google.com/get/noto/
 NotoSansJP-Thin.otf, from https://www.google.com/get/noto/help/cjk/
-AdobeVFPrototype.ttf, from https://github.com/adobe-fonts/adobe-variable-font-prototype
+AdobeVFPrototype.ttf, from https://github.com/adobe-fonts/adobe-variable-font-prototype. AdobeVFPrototypeDuplicates.ttf is a modified version of this
 TINY5x3GX.ttf, from http://velvetyne.fr/fonts/tiny
 ArefRuqaa-Regular.ttf, from https://github.com/google/fonts/tree/master/ofl/arefruqaa
 ter-x20b.pcf, from http://terminus-font.sourceforge.net/

Tests/fonts/fuzz_font-5203009437302784

@@ -1,10 +1,10 @@
 STARTFONT
 FONT ÿ
 SIZE 10
-FONTBOUNDINGBOX
-CHARS
+FONTBOUNDINGBOX 1 1 0 0
+CHARS 1
 STARTCHAR 
-ENCODING
+ENCODING 65
 BBX 2 5
 ENDCHAR
 ENDFONT

Tests/helper.py

@@ -9,17 +9,21 @@ import os
 import shutil
 import subprocess
 import sys
-import sysconfig
 import tempfile
 from functools import lru_cache
 from io import BytesIO
-from typing import Any, Callable, Sequence
 
 import pytest
 from packaging.version import parse as parse_version
 
 from PIL import Image, ImageFile, ImageMath, features
 
+TYPE_CHECKING = False
+if TYPE_CHECKING:
+    from collections.abc import Callable, Sequence
+    from pathlib import Path
+    from typing import Any
+
 logger = logging.getLogger(__name__)
 
 uploader = None
@@ -51,17 +55,15 @@ def convert_to_comparable(
     if a.mode == "P":
         new_a = Image.new("L", a.size)
         new_b = Image.new("L", b.size)
-        new_a.putdata(a.getdata())
-        new_b.putdata(b.getdata())
+        new_a.putdata(a.get_flattened_data())
+        new_b.putdata(b.get_flattened_data())
     elif a.mode == "I;16":
         new_a = a.convert("I")
         new_b = b.convert("I")
     return new_a, new_b
 
 
-def assert_deep_equal(
-    a: Sequence[Any], b: Sequence[Any], msg: str | None = None
-) -> None:
+def assert_deep_equal(a: Any, b: Any, msg: str | None = None) -> None:
     try:
         assert len(a) == len(b), msg or f"got length {len(a)}, expected {len(b)}"
     except Exception:
@@ -97,12 +99,14 @@ def assert_image_equal(a: Image.Image, b: Image.Image, msg: str | None = None) -
 
 
 def assert_image_equal_tofile(
-    a: Image.Image, filename: str, msg: str | None = None, mode: str | None = None
+    a: Image.Image,
+    filename: str | Path,
+    msg: str | None = None,
+    mode: str | None = None,
 ) -> None:
-    with Image.open(filename) as img:
-        if mode:
-            img = img.convert(mode)
-        assert_image_equal(a, img, msg)
+    with Image.open(filename) as im:
+        converted_im = im.convert(mode) if mode else im
+        assert_image_equal(a, converted_im, msg)
 
 
 def assert_image_similar(
@@ -138,21 +142,14 @@ def assert_image_similar(
 
 def assert_image_similar_tofile(
     a: Image.Image,
-    filename: str,
+    filename: str | Path,
     epsilon: float,
     msg: str | None = None,
-    mode: str | None = None,
 ) -> None:
     with Image.open(filename) as img:
-        if mode:
-            img = img.convert(mode)
         assert_image_similar(a, img, epsilon, msg)
 
 
-def assert_all_same(items: Sequence[Any], msg: str | None = None) -> None:
-    assert items.count(items[0]) == len(items), msg
-
-
 def assert_not_all_same(items: Sequence[Any], msg: str | None = None) -> None:
     assert items.count(items[0]) != len(items), msg
 
@@ -166,11 +163,25 @@ def assert_tuple_approx_equal(
             pytest.fail(msg + ": " + repr(actuals) + " != " + repr(targets))
 
 
+def timeout_unless_slower_valgrind(timeout: float) -> pytest.MarkDecorator:
+    if "PILLOW_VALGRIND_TEST" in os.environ:
+        return pytest.mark.pil_noop_mark()
+    return pytest.mark.timeout(timeout)
+
+
 def skip_unless_feature(feature: str) -> pytest.MarkDecorator:
     reason = f"{feature} not available"
     return pytest.mark.skipif(not features.check(feature), reason=reason)
 
 
+def has_feature_version(feature: str, required: str) -> bool:
+    version = features.version(feature)
+    assert version is not None
+    version_required = parse_version(required)
+    version_available = parse_version(version)
+    return version_available >= version_required
+
+
 def skip_unless_feature_version(
     feature: str, required: str, reason: str | None = None
 ) -> pytest.MarkDecorator:
@@ -270,17 +281,13 @@ def _cached_hopper(mode: str) -> Image.Image:
         im = hopper("L")
     else:
         im = hopper()
-    if mode.startswith("BGR;"):
-        with pytest.warns(DeprecationWarning):
-            im = im.convert(mode)
-    else:
-        try:
-            im = im.convert(mode)
-        except ImportError:
-            if mode == "LAB":
-                im = Image.open("Tests/images/hopper.Lab.tif")
-            else:
-                raise
+    try:
+        im = im.convert(mode)
+    except ImportError:
+        if mode == "LAB":
+            im = Image.open("Tests/images/hopper.Lab.tif")
+        else:
+            raise
     return im
 
 
@@ -294,16 +301,6 @@ def djpeg_available() -> bool:
     return False
 
 
-def cjpeg_available() -> bool:
-    if shutil.which("cjpeg"):
-        try:
-            subprocess.check_call(["cjpeg", "-version"])
-            return True
-        except subprocess.CalledProcessError:  # pragma: no cover
-            return False
-    return False
-
-
 def netpbm_available() -> bool:
     return bool(shutil.which("ppmquant") and shutil.which("ppmtogif"))
 
@@ -328,16 +325,7 @@ def magick_command() -> list[str] | None:
     return None
 
 
-def on_appveyor() -> bool:
-    return "APPVEYOR" in os.environ
-
-
-def on_github_actions() -> bool:
-    return "GITHUB_ACTIONS" in os.environ
-
-
 def on_ci() -> bool:
-    # GitHub Actions and AppVeyor have "CI"
     return "CI" in os.environ
 
 
@@ -359,10 +347,6 @@ def is_pypy() -> bool:
     return hasattr(sys, "pypy_translation_info")
 
 
-def is_mingw() -> bool:
-    return sysconfig.get_platform() == "mingw"
-
-
 class CachedProperty:
     def __init__(self, func: Callable[[Any], Any]) -> None:
         self.func = func

Tests/images/bmp/html/bmpsuite.html

@@ -1,578 +0,0 @@
-<!DOCTYPE html>
-<html>
-
-<head>
-
-<title>BMP Suite Image List</title>
-
-<style>
- .b { background:url(bkgd.png); }
- .q { background-color:#fff0e0; }
- .bad { background-color:#ffa0a0; }
-</style>
-
-</head>
-
-<body>
-
-<h1>BMP Suite Image List</h1>
-
-<p><i>For <a href="http://entropymine.com/jason/bmpsuite/">BMP Suite</a>
-version 2.3</i></p>
-
-<p>This document describes the images in <i>BMP Suite</i>, and shows what
-I allege to be the correct way to interpret them. PNG and JPEG images are
-used for reference.
-</p>
-
-<p>It also shows how your web browser displays the BMP images,
-but that&rsquo;s not its main purpose.
-BMP is poor image format to use on web pages, so a web browser&rsquo;s
-level of support for it is arguably not important.</p>
-
-<table border=1 cellpadding=8>
-
- <tr>
-  <th>File</th>
-  <th>Ver.</th>
-  <th>Correct display</th>
-  <th>In your browser</th>
-  <th>Notes</th>
- </tr>
-
- <tr>
-  <td>g/pal1.bmp</td>
-  <td>3</td>
-  <td class=b><img src="pal1.png"></td>
-  <td class=b><img src="../g/pal1.bmp"></td>
-  <td>1 bit/pixel paletted image, in which black is the first color in
-   the palette.</td>
- </tr>
-
- <tr>
-  <td>g/pal1wb.bmp</td>
-  <td>3</td>
-  <td class=b><img src="pal1.png"></td>
-  <td class=b><img src="../g/pal1wb.bmp"></td>
-  <td>1 bit/pixel paletted image, in which white is the first color in
-   the palette.</td>
- </tr>
-
- <tr>
-  <td>g/pal1bg.bmp</td>
-  <td>3</td>
-  <td class=b><img src="pal1bg.png"></td>
-  <td class=b><img src="../g/pal1bg.bmp"></td>
-  <td>1 bit/pixel paletted image, with colors other than black and white.</td>
- </tr>
-
- <tr>
-  <td class=q>q/pal1p1.bmp</td>
-  <td>3</td>
-  <td class=b><img src="pal1p1.png"></td>
-  <td class=b><img src="../q/pal1p1.bmp"></td>
-  <td>1 bit/pixel paletted image, with only one color in the palette.
-   The documentation says that 1-bpp images have a palette size of 2
-   (not &ldquo;up to 2&rdquo;), but it would be silly for a viewer not to
-   support a size of 1.</td>
- </tr>
-
- <tr>
-  <td class=q>q/pal2.bmp</td>
-  <td>3</td>
-  <td class=b><img src="pal2.png"></td>
-  <td class=b><img src="../q/pal2.bmp"></td>
-  <td>A paletted image with 2 bits/pixel. Usually only 1, 4,
-   and 8 are allowed, but 2 is legal on Windows CE.</td>
- </tr>
-
- <tr>
-  <td>g/pal4.bmp</td>
-  <td>3</td>
-  <td class=b><img src="pal4.png"></td>
-  <td class=b><img src="../g/pal4.bmp"></td>
-  <td>Paletted image with 12 palette colors, and 4 bits/pixel.</td>
- </tr>
-
- <tr>
-  <td>g/pal4rle.bmp</td>
-  <td>3</td>
-  <td class=b><img src="pal4.png"></td>
-  <td class=b><img src="../g/pal4rle.bmp"></td>
-  <td>4-bit image that uses RLE compression.</td>
- </tr>
-
- <tr>
-  <td class=q>q/pal4rletrns.bmp</td>
-  <td>3</td>
-  <td class=b><img src="pal4rletrns.png"><br>
-     or<br><img src="pal4rletrns-0.png"><br>
-     or<br><img src="pal4rletrns-b.png"></td>
-  <td class=b><img src="../q/pal4rletrns.bmp"></td>
-  <td>An RLE-compressed image that used &ldquo;delta&rdquo;
-  codes to skip over some pixels, leaving them undefined. Some viewers
-  make undefined pixels transparent, others make them black, and
-  others assign them palette color 0 (purple, in this case).</td>
- </tr>
-
- <tr>
-  <td>g/pal8.bmp</td>
-  <td>3</td>
-  <td class=b><img src="pal8.png"></td>
-  <td class=b><img src="../g/pal8.bmp"></td>
-  <td>Our standard paletted image, with 252 palette colors, and 8
-   bits/pixel.</td>
- </tr>
-
- <tr>
-  <td>g/pal8-0.bmp</td>
-  <td>3</td>
-  <td class=b><img src="pal8.png"></td>
-  <td class=b><img src="../g/pal8-0.bmp"></td>
-  <td>Every field that can be set to 0 is set to 0: pixels/meter=0;
-   colors used=0 (meaning the default 256); size-of-image=0.</td>
- </tr>
-
- <tr>
-  <td>g/pal8rle.bmp</td>
-  <td>3</td>
-  <td class=b><img src="pal8.png"></td>
-  <td class=b><img src="../g/pal8rle.bmp"></td>
-  <td>8-bit image that uses RLE compression.</td>
- </tr>
-
- <tr>
-  <td class=q>q/pal8rletrns.bmp</td>
-  <td>3</td>
-  <td class=b><img src="pal8rletrns.png"><br>
-     or<br><img src="pal8rletrns-0.png"><br>
-     or<br><img src="pal8rletrns-b.png"></td>
-  <td class=b><img src="../q/pal8rletrns.bmp"></td>
-  <td>8-bit version of q/pal4rletrns.bmp.</td>
- </tr>
-
- <tr>
-  <td>g/pal8w126.bmp</td>
-  <td>3</td>
-  <td class=b><img src="pal8w126.png"></td>
-  <td class=b><img src="../g/pal8w126.bmp"></td>
-  <td rowspan=3>Images with different widths and heights.
-   In BMP format, rows are padded to a multiple of four bytes, so we
-   test all four possibilities.</td>
- </tr>
-
- <tr>
-  <td>g/pal8w125.bmp</td>
-  <td>3</td>
-  <td class=b><img src="pal8w125.png"></td>
-  <td class=b><img src="../g/pal8w125.bmp"></td>
- </tr>
-
- <tr>
-  <td>g/pal8w124.bmp</td>
-  <td>3</td>
-  <td class=b><img src="pal8w124.png"></td>
-  <td class=b><img src="../g/pal8w124.bmp"></td>
- </tr>
-
- <tr>
-  <td>g/pal8topdown.bmp</td>
-  <td>3</td>
-  <td class=b><img src="pal8.png"></td>
-  <td class=b><img src="../g/pal8topdown.bmp"></td>
-  <td>BMP images are normally stored from the bottom up, but
-   there is a way to store them from the top down.</td>
- </tr>
-
- <tr>
-  <td class=q>q/pal8offs.bmp</td>
-  <td>3</td>
-  <td class=b><img src="pal8.png"></td>
-  <td class=b><img src="../q/pal8offs.bmp"></td>
-  <td>A file with some unused bytes between the palette and the
-   image. This is probably valid, but I&rsquo;m not 100% sure.</td>
- </tr>
-
- <tr>
-  <td class=q>q/pal8oversizepal.bmp</td>
-  <td>3</td>
-  <td class=b><img src="pal8.png"></td>
-  <td class=b><img src="../q/pal8oversizepal.bmp"></td>
-  <td>An 8-bit image with 300 palette colors. This may be invalid,
-   because the documentation could
-   be interpreted to imply that 8-bit images aren&rsquo;t allowed
-   to have more than 256 colors.</td>
- </tr>
-
- <tr>
-  <td>g/pal8nonsquare.bmp</td>
-  <td>3</td>
-  <td class=b>
-   <img src="pal8nonsquare-v.png"><br>
-   or<br>
-   <img src="pal8nonsquare-e.png">
-  </td>
-  <td class=b><img src="../g/pal8nonsquare.bmp"></td>
-  <td>An image with non-square pixels: the X pixels/meter is twice
-   the Y pixels/meter. Image <i>editors</i> can be expected to
-   leave the image &ldquo;squashed&rdquo;; image <i>viewers</i> should
-   consider stretching it to its correct proportions.</td>
- </tr>
-
- <tr>
-  <td>g/pal8os2.bmp</td>
-  <td>OS/2v1</td>
-  <td class=b><img src="pal8.png"></td>
-  <td class=b><img src="../g/pal8os2.bmp"></td>
-  <td>An OS/2-style bitmap.</td>
- </tr>
-
- <tr>
-  <td class=q>q/pal8os2sp.bmp</td>
-  <td>OS/2v1</td>
-  <td class=b><img src="pal8.png"></td>
-  <td class=b><img src="../q/pal8os2sp.bmp"></td>
-  <td>An OS/2v1 with a less-than-full-sized palette.
-   Probably not valid, but such files have been seen in the wild.</td>
- </tr>
-
- <tr>
-  <td class=q>q/pal8os2v2.bmp</td>
-  <td>OS/2v2</td>
-  <td class=b><img src="pal8.png"></td>
-  <td class=b><img src="../q/pal8os2v2.bmp"></td>
-  <td>My attempt to make an OS/2v2 bitmap.</td>
- </tr>
-
- <tr>
-  <td class=q>q/pal8os2v2-16.bmp</td>
-  <td>OS/2v2</td>
-  <td class=b><img src="pal8.png"></td>
-  <td class=b><img src="../q/pal8os2v2-16.bmp"></td>
-  <td>An OS/2v2 bitmap whose header has only 16 bytes, instead of the full 64.</td>
- </tr>
-
- <tr>
-  <td>g/pal8v4.bmp</td>
-  <td>4</td>
-  <td class=b><img src="pal8.png"></td>
-  <td class=b><img src="../g/pal8v4.bmp"></td>
-  <td>A v4 bitmap. I&rsquo;m not sure that the gamma and chromaticity values in
-   this file are sensible, because I can&rsquo;t find any detailed documentation
-   of them.</td>
- </tr>
-
- <tr>
-  <td>g/pal8v5.bmp</td>
-  <td>5</td>
-  <td class=b><img src="pal8.png"></td>
-  <td class=b><img src="../g/pal8v5.bmp"></td>
-  <td>A v5 bitmap. Version 5 has additional colorspace options over v4, so it
-   is easier to create, and ought to be more portable.</td>
- </tr>
-
- <tr>
-  <td>g/rgb16.bmp</td>
-  <td>3</td>
-  <td class=b><img src="rgb16.png"></td>
-  <td class=b><img src="../g/rgb16.bmp"></td>
-  <td>A 16-bit image with the default color format: 5 bits each for red,
-   green, and blue, and 1 unused bit.
-   The whitest colors should (I assume) be displayed as pure white:
-   <span style="background-color:rgb(255,255,255)">(255,255,255)</span>, not
-   <span style="background-color:rgb(248,248,248)">(248,248,248)</span>.</td>
- </tr>
-
- <tr>
-  <td>g/rgb16-565.bmp</td>
-  <td>3</td>
-  <td class=b><img src="rgb16-565.png"></td>
-  <td class=b><img src="../g/rgb16-565.bmp"></td>
-  <td>A 16-bit image with a BITFIELDS segment indicating 5 red, 6 green,
-   and 5 blue bits. This is a standard 16-bit format, even supported by
-   old versions of Windows that don&rsquo;t support any other non-default 16-bit
-   formats.
-   The whitest colors should be displayed as pure white:
-   <span style="background-color:rgb(255,255,255)">(255,255,255)</span>, not
-   <span style="background-color:rgb(248,252,248)">(248,252,248)</span>.</td>
- </tr>
-
- <tr>
-  <td>g/rgb16-565pal.bmp</td>
-  <td>3</td>
-  <td class=b><img src="rgb16-565.png"></td>
-  <td class=b><img src="../g/rgb16-565pal.bmp"></td>
-  <td>A 16-bit image with both a BITFIELDS segment and a palette.</td>
- </tr>
-
- <tr>
-  <td class=q>q/rgb16-231.bmp</td>
-  <td>3</td>
-  <td class=b><img src="rgb16-231.png"></td>
-  <td class=b><img src="../q/rgb16-231.bmp"></td>
-  <td>An unusual and silly 16-bit image, with 2 red bits, 3 green bits, and 1
-  blue bit. Most viewers do support this image, but the colors may be darkened
-  with a yellow-green shadow. That&rsquo;s because they&rsquo;re doing simple
-  bit-shifting (possibly including one round of bit replication), instead of
-  proper scaling.</td>
- </tr>
-
- <tr>
-  <td class=q>q/rgba16-4444.bmp</td>
-  <td>5</td>
-  <td class=b><img src="rgba16-4444.png"></td>
-  <td class=b><img src="../q/rgba16-4444.bmp"></td>
-  <td>A 16-bit image with an alpha channel. There are 4 bits for each color
-   channel, and 4 bits for the alpha channel.
-   It&rsquo;s not clear if this is valid, but I can&rsquo;t find anything that
-   suggests it isn&rsquo;t.
-   </td>
- </tr>
-
- <tr>
-  <td>g/rgb24.bmp</td>
-  <td>3</td>
-  <td class=b><img src="rgb24.png"></td>
-  <td class=b><img src="../g/rgb24.bmp"></td>
-  <td>A perfectly ordinary 24-bit (truecolor) image.</td>
- </tr>
-
- <tr>
-  <td>g/rgb24pal.bmp</td>
-  <td>3</td>
-  <td class=b><img src="rgb24.png"></td>
-  <td class=b><img src="../g/rgb24pal.bmp"></td>
-  <td>A 24-bit image, with a palette containing 256 colors. There is little if
-   any reason for a truecolor image to contain a palette, but it is legal.</td>
- </tr>
-
- <tr>
-  <td class=q>q/rgb24largepal.bmp</td>
-  <td>3</td>
-  <td class=b><img src="rgb24.png"></td>
-  <td class=b><img src="../q/rgb24largepal.bmp"></td>
-  <td>A 24-bit image, with a palette containing 300 colors.
-   The fact that the palette has more than 256 colors may cause some viewers
-   to complain, but the documentation does not mention a size limit.</td>
- </tr>
-
- <tr>
-  <td class=q>q/rgb24prof.bmp</td>
-  <td>5</td>
-  <td class=b><img src="rgb24.png"></td>
-  <td class=b><img src="../q/rgb24prof.bmp"></td>
-  <td>My attempt to make a BMP file with an embedded color profile.</td>
- </tr>
-
- <tr>
-  <td class=q>q/rgb24lprof.bmp</td>
-  <td>5</td>
-  <td class=b><img src="rgb24.png"></td>
-  <td class=b><img src="../q/rgb24lprof.bmp"></td>
-  <td>My attempt to make a BMP file with a linked color profile.</td>
- </tr>
-
- <tr>
-  <td class=q>q/rgb24jpeg.bmp</td>
-  <td>5</td>
-  <td class=b><img src="rgb24.jpg"></td>
-  <td class=b><img src="../q/rgb24jpeg.bmp"></td>
-  <td rowspan=2>My attempt to make BMP files with embedded JPEG and PNG images.
-   These are not likely to be supported by much of anything (they&rsquo;re
-   intended for printers).</td>
- </tr>
-
- <tr>
-  <td class=q>q/rgb24png.bmp</td>
-  <td>5</td>
-  <td class=b><img src="rgb24.png"></td>
-  <td class=b><img src="../q/rgb24png.bmp"></td>
- </tr>
-
- <tr>
-  <td>g/rgb32.bmp</td>
-  <td>3</td>
-  <td class=b><img src="rgb24.png"></td>
-  <td class=b><img src="../g/rgb32.bmp"></td>
-  <td>A 32-bit image using the default color format for 32-bit images (no
-   BITFIELDS segment). There are 8 bits per color channel, and 8 unused
-   bits. The unused bits are set to 0.</td>
- </tr>
-
- <tr>
-  <td>g/rgb32bf.bmp</td>
-  <td>3</td>
-  <td class=b><img src="rgb24.png"></td>
-  <td class=b><img src="../g/rgb32bf.bmp"></td>
-  <td>A 32-bit image with a BITFIELDS segment. As usual, there are 8 bits per
-   color channel, and 8 unused bits. But the color channels are in an unusual
-   order, so the viewer must read the BITFIELDS, and not just guess.</td>
- </tr>
-
- <tr>
-  <td class=q>q/rgb32fakealpha.bmp</td>
-  <td>3</td>
-  <td class=b><img src="rgb24.png"><br>
-    or<br>
-    <img class=b src="fakealpha.png">
-</td>
-  <td class=b><img src="../q/rgb32fakealpha.bmp"></td>
-  <td>Same as g/rgb32.bmp, except that the unused bits are set to something
-   other than 0.
-   If the image becomes transparent toward the bottom, it probably means
-   the viewer uses heuristics to guess whether the undefined
-   data represents transparency.</td>
- </tr>
-
- <tr>
-  <td class=q>q/rgb32-111110.bmp</td>
-  <td>3</td>
-  <td class=b><img src="rgb24.png"></td>
-  <td class=b><img src="../q/rgb32-111110.bmp"></td>
-  <td>A 32 bits/pixel image, with all 32 bits used: 11 each for red and
-   green, and 10 for blue. As far as I know, this is perfectly valid, but it
-   is unusual.</td>
- </tr>
-
- <tr>
-  <td class=q>q/rgba32.bmp</td>
-  <td>5</td>
-  <td class=b><img src="rgba32.png"></td>
-  <td class=b><img src="../q/rgba32.bmp"></td>
-  <td>A BMP with an alpha channel. Transparency is barely documented,
-   so it&rsquo;s <i>possible</i> that this file is not correctly formed.
-   The color channels are in an unusual order, to prevent viewers from
-   passing this test by making a lucky guess.</td>
- </tr>
-
- <tr>
-  <td class=q>q/rgba32abf.bmp</td>
-  <td>3</td>
-  <td class=b><img src="rgba32.png"></td>
-  <td class=b><img src="../q/rgba32abf.bmp"></td>
-  <td>An image of type BI_ALHPABITFIELDS. Supposedly, this was used on
-   Windows CE. I don&rsquo;t know whether it is constructed correctly.</td>
- </tr>
-
-
- <tr>
-  <td class=bad>b/badbitcount.bmp</td>
-  <td>3</td>
-  <td class=b>N/A</td>
-  <td class=b><img src="../b/badbitcount.bmp"></td>
-  <td>Header indicates an absurdly large number of bits/pixel.</td>
- </tr>
-
- <tr>
-  <td class=bad>b/badbitssize.bmp</td>
-  <td>3</td>
-  <td class=b>N/A</td>
-  <td class=b><img src="../b/badbitssize.bmp"></td>
-  <td>Header incorrectly indicates that the bitmap is several GB in size.</td>
- </tr>
-
- <tr>
-  <td class=bad>b/baddens1.bmp</td>
-  <td>3</td>
-  <td class=b>N/A</td>
-  <td class=b><img src="../b/baddens1.bmp"></td>
-  <td rowspan=2>Density (pixels per meter) suggests the image is <i>much</i>
-      larger in one dimension than the other.</td>
- </tr>
-
- <tr>
-  <td class=bad>b/baddens2.bmp</td>
-  <td>3</td>
-  <td class=b>N/A</td>
-  <td class=b><img src="../b/baddens2.bmp"></td>
- </tr>
-
- <tr>
-  <td class=bad>b/badfilesize.bmp</td>
-  <td>3</td>
-  <td class=b>N/A</td>
-  <td class=b><img src="../b/badfilesize.bmp"></td>
-  <td>Header incorrectly indicates that the file is several GB in size.</td>
- </tr>
-
- <tr>
-  <td class=bad>b/badheadersize.bmp</td>
-  <td>?</td>
-  <td class=b>N/A</td>
-  <td class=b><img src="../b/badheadersize.bmp"></td>
-  <td>Header size is 66 bytes, which is not a valid size for any known BMP
-   version.</td>
- </tr>
-
- <tr>
-  <td class=bad>b/badpalettesize.bmp</td>
-  <td>3</td>
-  <td class=b>N/A</td>
-  <td class=b><img src="../b/badpalettesize.bmp"></td>
-  <td>Header incorrectly indicates that the palette contains an absurdly large
-   number of colors.</td>
- </tr>
-
- <tr>
-  <td class=bad>b/badplanes.bmp</td>
-  <td>3</td>
-  <td class=b>N/A</td>
-  <td class=b><img src="../b/badplanes.bmp"></td>
-  <td>The &ldquo;planes&rdquo; setting, which is required to be 1, is not 1.</td>
- </tr>
-
- <tr>
-  <td class=bad>b/badrle.bmp</td>
-  <td>3</td>
-  <td class=b>N/A</td>
-  <td class=b><img src="../b/badrle.bmp"></td>
-  <td>An invalid RLE-compressed image that tries to cause buffer overruns.</td>
- </tr>
-
- <tr>
-  <td class=bad>b/badwidth.bmp</td>
-  <td>3</td>
-  <td class=b>N/A</td>
-  <td class=b><img src="../b/badwidth.bmp"></td>
-  <td>The image claims to be a negative number of pixels in width.</td>
- </tr>
-
- <tr>
-  <td class=bad>b/pal8badindex.bmp</td>
-  <td>3</td>
-  <td class=b>N/A</td>
-  <td class=b><img src="../b/pal8badindex.bmp"></td>
-  <td>Many of the palette indices used in the image are not present in the
-   palette.</td>
- </tr>
-
- <tr>
-  <td class=bad>b/reallybig.bmp</td>
-  <td>3</td>
-  <td class=b>N/A</td>
-  <td class=b><img src="../b/reallybig.bmp"></td>
-  <td>An image with a very large reported width and height.</td>
- </tr>
-
- <tr>
-  <td class=bad>b/rletopdown.bmp</td>
-  <td>3</td>
-  <td class=b>N/A</td>
-  <td class=b><img src="../b/rletopdown.bmp"></td>
-  <td>An RLE-compressed image that tries to use top-down orientation,
-   which isn&rsquo;t allowed.</td>
- </tr>
-
- <tr>
-  <td class=bad>b/shortfile.bmp</td>
-  <td>3</td>
-  <td class=b>N/A</td>
-  <td class=b><img src="../b/shortfile.bmp"></td>
-  <td>A file that has been truncated in the middle of the bitmap.</td>
- </tr>
-
-</table>
-
-</body>
-
-</html>