Assets

• libjpeg-turbo-3.1.1.tar.gz is the official source tarball for this release. The automatically generated "Source code" assets are not supported.
• Refer to https://libjpeg-turbo.org/Downloads/DigitalSignatures for information regarding the methods used to sign the files in this release and instructions for verifying the signatures.
• Refer to https://libjpeg-turbo.org/Documentation/OfficialBinaries for information regarding the compatibility of the binary packages in this release.

Packaging Changes

• The macOS packages are now notarized, which eliminates a Gatekeeper warning with recent macOS releases. (Previously, installing libjpeg-turbo on recent macOS releases required overriding the warning in the Privacy & Security pane under System Settings.)
• A Windows/Arm package is now provided.
• New builds of libjpeg-turbo-3.1.1-vc-x64.exe and libjpeg-turbo-3.1.1-vc-arm64.exe built with clang-cl were uploaded on 2025-06-18. Relative to the Visual C++ compiler, clang-cl improves the overall performance of libjpeg-turbo by approximately 10% on average for x64 systems and 30-35% on average for Arm64 systems.
• A new build of libjpeg-turbo-3.1.1.dmg was uploaded on 2025-08-13 to address an issue whereby the TurboJPEG Java wrapper could not be used with the x86-64 architecture.

Support

Code Quality: Stable
Current Support Category: Active

Release Notes

Significant changes relative to 3.1.0:

1. Hardened the libjpeg API against hypothetical calling applications that may erroneously change the value of the data_precision field in jpeg_compress_struct or jpeg_decompress_struct after calling jpeg_start_compress() or jpeg_start_decompress().