Libjpeg is a widely used C library for reading and writing JPEG image files. It was developed by Tom Lane and the Independent JPEG Group (IJG) during the 1990's and it is now maintained by several developers using various services identified in the SourceForge summary. The latest release is version 6b of 27-Mar-1998.

libjpeg-turbo is a JPEG image codec that uses SIMD instructions to accelerate baseline JPEG compression and decompression on x86, x86-64, Arm, PowerPC, and MIPS systems, as well as progressive JPEG compression on x86, x86-64, and Arm systems. On such systems, libjpeg-turbo is generally 2-6x as fast as libjpeg, all else being equal.

libjpeg-turbo is a JPEG image codec that uses SIMD instructions (MMX, SSE2, AVX2, Neon, AltiVec) to accelerate baseline JPEG compression and decompression on x86, x86-64, Arm, and PowerPC systems, as well as progressive JPEG compression on x86, x86-64, and Arm systems.

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IJG is an informal group that writes and distributes a widely used free library for JPEG image compression. The first version was released on 7-Oct-1991. The current version is release 9f of 14-Jan-2024. This is a stable and solid foundation for many application's JPEG support.

The IJG JPEG library provides C code to read and write JPEG-compressed image files. The surrounding application program receives or supplies image data a scanline at a time, using a straightforward uncompressed image format. All details of color conversion and other preprocessing/postprocessing can be handled by the library.

libjpeg-turbo-3.0.90.tar.gz is the official source tarball for this release. The automatically generated "Source code" assets are not supported.

2024年9月14日 · The libjpeg API and associated programs (cjpeg, djpeg, etc.) are documented in the files example.c, libjpeg.txt, usage.txt, and wizard.txt, which can be found in the source tree or in the same documentation directories described above. You can also read the latest versions of these files online by clicking one of the links below.

2024年8月23日 · With each release, The libjpeg-turbo Project provides "official" binary packages to support the most popular development platforms. In all cases, the official binaries are built in a manner that is as performant and compatible as possible.

2008年12月30日 · libjpeg is a free software library written for JPEG image compression.