https://pillow.readthedocs.io/en/stable/releasenotes/11.3.0.html

Deprecations

• Deprecate fromarray mode argument #9018 [@radarhere]
• Deprecate saving I mode images as PNG #9023 [@radarhere]

Documentation

• Added release notes for #9041 #9042 [@radarhere]
• Add release notes for #8912 and #8969 #9019 [@radarhere]
• ImageFont does not handle multiline text #9000 [@radarhere]
• Updated Ubuntu CI targets #8988 [@radarhere]
• Update MinGW package names #8987 [@H4M5TER]
• Updated docstring #8943 [@radarhere]
• Mention that tobytes() with the raw encoder uses Pack.c #8878 [@radarhere]
• Refactor docs Makefile #8933 [@hugovk]
• Add template for quarterly release issue #8932 [@aclark4life]
• Add list of third party plugins #8910 [@radarhere]
• Update redirected URL #8919 [@radarhere]
• Docs: use sentence case for headers #8914 [@hugovk]
• Docs: remove unused Makefile targets #8917 [@hugovk]
• Remove indentation from lists #8915 [@radarhere]
• Python 3.13 is tested on Arch #8894 [@radarhere]
• Move XV Thumbnails to read only section #8893 [@aclark4life]
• Updated macOS tested Pillow versions #8890 [@radarhere]

Dependencies

• Add AVIF to wheels using only aomenc and dav1d AVIF codecs for reduced size #8858 [@fdintino]
• Use same AVIF URL when fetching dependency #8871 [@radarhere]
• Update dependency mypy to v1.16.1 #9026 [@renovate[bot]]
• Update libpng to 1.6.49 #9014 [@radarhere]
• Update dependency cibuildwheel to v3 #9010 [@renovate[bot]]
• Updated libjpeg-turbo to 3.1.1 #9009 [@radarhere]
• Update dependency mypy to v1.16.0 #8991 [@renovate[bot]]
• Updated libpng to 1.6.48 #8940 [@radarhere]
• Updated Ghostscript to 10.5.1 #8939 [@radarhere]
• Updated harfbuzz to 11.2.1 #8937 [@radarhere]
• Updated libavif to 1.3.0 #8949 [@radarhere]
• Update dependency cibuildwheel to v2.23.3 #8931 [@renovate[bot]]
• Updated harfbuzz to 11.1.0 #8904 [@radarhere]

Testing

• Add match parameter to pytest.warns() #9038 [@hugovk]
• Increase pytest verbosity #9040 [@radarhere]
• Improve SgiImagePlugin test coverage #8896 [@radarhere]
• Update ruff pre-commit ID #8994 [@radarhere]
• Only check DHT marker for libjpeg-turbo #9025 [@radarhere]
• Improve BLP tests #9020 [@radarhere]
• Fix warning #9016 [@radarhere]
• Test Python 3.14t on macOS and Linux #9011 [@radarhere]
• Only accept missing tkinter when building wheels on Windows #8981 [@radarhere]
• Fix test #8996 [@radarhere]
• Stop testing deprecated Windows Server 2019 runner image #8989 [@radarhere]
• Run slow tests on valgrind, but without timeout #8975 [@radarhere]
• Close file pointer earlier #8895 [@radarhere]
• Added Fedora 42 #8899 [@radarhere]
• Removed Fedora 40 #8887 [@radarhere]

Type hints

• Assert palette is not None #8877 [@radarhere]
• Do not import type checking #8854 [@radarhere]
• Improve type hints #8883 [@radarhere]
• Update dependency mypy to v1.16.0 #8991 [@renovate[bot]]

Other changes

• Updated check script paths #9052 [@radarhere]
• Raise FileNotFoundError when opening an empty path #9048 [@radarhere]
• Handle IPTC TIFF tags with incorrect type #8925 [@radarhere]
• Do not update palette for L mode GIF frame #8924 [@radarhere]
• Use save parameters as encoderinfo defaults #9001 [@radarhere]
• Add support for iOS #9030 [@freakboy3742]
• Fix qtables and quality scaling #8879 [@Kyliroco]
• Read 16-bit McIdas images into I;16B mode to allow for memory mapping #9046 [@radarhere]
• Support ttb multiline text #8730 [@radarhere]
• Use unpacking #9044 [@radarhere]
• Fix saving MPO with more than one appended image #8979 [@radarhere]
• Restore original encoderinfo after saving #8942 [@radarhere]
• Return PixelAccess from first load of ICO and IPTC images #8922 [@radarhere]
• Improve justifying text #8905 [@radarhere]
• Set color table fourth channel to zero for 1 and L mode when saving BMP #8889 [@radarhere]
• Improve reading XPM images #8874 [@radarhere]
• Fix buffer overflow when saving compressed DDS images #9041 [@radarhere]
• Use PEP 489 multi-phase initialization #8983 [@radarhere]
• Support saving I;16L TIFF images #9015 [@radarhere]
• Do not call sys.executable in ImageShow in PyInstaller application #9028 [@radarhere]
• Search for libtiff library file first on Windows and macOS #9034 [@radarhere]
• Fix libtiff cleanup #9002 [@radarhere]
• Use percent formatting for _dbg calls #9035 [@radarhere]
• Removed ImageCmsProfile._set method #9032 [@radarhere]
• Added Python 3.14 macOS x86-64 wheels #9031 [@radarhere]
• Support writing QOI images #9007 [@thisismypassport]
• Simplify C error handling #9021 [@radarhere]
• Add Python 3.14 beta wheels #9012 [@hugovk]
• Remove padding between interleaved PCX palette data #9005 [@radarhere]
• Start QOI decoding with a zero-initialized array of previously seen pixels #9008 [@radarhere]
• Correct drawing I;16 horizontal lines #8985 [@radarhere]
• Reduce number of bytes read for PCX header #9004 [@radarhere]
• Handle XMP data from an UNDEFINED TIFF tag #8997 [@radarhere]
• Do not decode bytes in PPM error message #8958 [@radarhere]
• Parse XMP tag bytes without decoding to string #8960 [@radarhere]
• Clear TIFF core image if memory mapping was used for last load #8962 [@radarhere]
• Use mask in C when drawing wide polygon lines #8984 [@radarhere]
• Simplify code #8863 [@radarhere]
• Call startswith once with a tuple #8998 [@radarhere]
• [pre-commit.ci] pre-commit autoupdate #8993 [@pre-commit-ci[bot]]
• Use ImageFile.MAXBLOCK in tobytes() #8906 [@radarhere]
• Removed unreachable code #8918 [@radarhere]
• Valgrind Memory Leak Checking #8954 [@wiredfool]
• Add parallel test target, using pytest-xdist #8972 [@wiredfool]
• Add support for flat uint8 arrow arrays for multi channel images #8908 [@wiredfool]
• Removed CMAKE_POLICY_VERSION_MINIMUM=3.5 for libavif #8973 [@radarhere]
• Reduced number of bytes read in WMF header #8964 [@radarhere]
• Do not build against libavif < 1 #8969 [@radarhere]
• Improved support for Python 3.14 #8948 [@radarhere]
• [pre-commit.ci] pre-commit autoupdate #8944 [@pre-commit-ci[bot]]
• Allow loading ImageFile state from Pillow < 11.2.1 #8938 [@radarhere]
• Remove outdated comment #8929 [@radarhere]
• Add support for Grim in Wayland sessions ImageGrab #8912 [@AdianKozlica]
• Add make [-C docs] htmllive to rebuild and reload HTML files #8913 [@hugovk]
• Build Windows arm64 wheels on arm64 runner #8898 [@radarhere]