Independent JPEG Group

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 8d of 15-Jan-2012. This is a stable and solid foundation for many application's JPEG support.

You can find our code and some supporting documentation in the directory files. There is a Unix format package in tar.gz archive format jpegsrc.v8d.tar.gz and a Windows format package in zip archive format jpegsr8d.zip.

To learn more about how to use JPEG, see the JPEG FAQ. If you'd like to learn about how JPEG works, start with the comp.compression FAQ.

The ISO/IEC JTC1/SC29/WG1 standards committee (also known as JPEG, together with ITU-T SG16) has their own web site. IJG is not affiliated with the ISO committee.

IJG development continues. Advanced features are being prepared for coming releases...

Version 9 of the Independent JPEG Group software is currently in development and is planned for release in January 2013. The development site for IJG JPEG 9 is at InfAI.org.