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JNG(5)                   DragonFly File Formats Manual                  JNG(5)


NAME

       jng - JPEG Network Graphics (JNG) sub-format


DESCRIPTION

       JNG (JPEG Network Graphics) is a sub-format of the MNG (Multiple-image
       Network Graphics) format. As with MNG it extends on the features of the
       popular PNG (Portable Network Graphics) image-format.

       This sub-format was designed to support a lossy compression-method.  It
       is based completely on the JPEG specification. It adds the high-
       compression ratios of JPEG for photographic images.

       As a member of the Network Graphics family, JNG was deemed adequate as
       a stand-alone format as it extends the JPEG format with color-
       correction and transparency features.


SEE ALSO

       png(5), mng(5), libmng(3)

       MNG 1.00, February 9, 2001:

              http://www.libpng.org/pub/mng


AUTHORS

       This man page: Gerard Juyn

       Multiple-image Network Graphics (MNG) Specification Version 1.00
       (Februari 9, 2001): Glenn Randers-Pehrson and others (png-
       list@ccrc.wustl.edu).


COPYRIGHT NOTICE

       The MNG-1.00 specification is copyright (c) 1998-2001 Glenn Randers-
       Pehrson.  See the specification for conditions of use and distribution.

                                 July 26, 2000                          JNG(5)

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