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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-com-
       pression 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-correc-
       tion 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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