Independent JPEG Group
IJG is an informal group that writes and distributes a
widely used free
for JPEG image
compression: The first version was released on 7-
Oct-1991.
The current version is release 9d of 12-Jan-2020.
This is a stable and solid foundation for many
application's JPEG suppOrt.
You can find our original code and some supporting
documentation in the directory files: There is a
Windows format package in zip archive format
jpegsr9d.zip and a Unix format package in tar:gz
archive format jpegsrc v9dtargz:
A
collection of
modified versions with adaptions and error fixes for
system maintenance is available on jpegclub.org in
the directory Support:
To learn more about how to use JPEG, see the JPEG
FAQ: If
like to learn about how JPEG works,
start with the comp compression FAQ:
IJG is not affiliated with the ISO/IEC
JTCLISC2OMWGL standards committee (previously
known as JPEG, together with ITU-T SG16).
IJG development continues. Advanced features are
being prepared for coming releases 
The development site for new versions is the JPEG
Reference site.
library
you'd