jng(5) [centos man page]

JNG(5)								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-cor-
       rection 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)

PNG(5)								File Formats Manual							    PNG(5)

NAME

       png - Portable Network Graphics (PNG) format

DESCRIPTION

       PNG (Portable Network Graphics) is an extensible file format for the lossless, portable, well-compressed storage of raster images. PNG pro-
       vides a patent-free replacement for GIF and can also replace many common uses of TIFF. Indexed-color, grayscale, and truecolor  images  are
       supported, plus an optional alpha channel. Sample depths range from 1 to 16 bits.

       PNG  is designed to work well in online viewing applications, such as the World Wide Web, so it is fully streamable with a progressive dis-
       play option. PNG is robust, providing both full file integrity checking and fast, simple detection of common transmission errors. Also, PNG
       can store gamma and chromaticity data for improved color matching on heterogeneous platforms.

SEE ALSO

       libpng(3),zlib(3),deflate(5),andzlib(5)

       PNG 1.2 specification, July 1999:

	      http://www.libpng.org/pub/png
	      or ftp://ftp.uu.net/graphics/png/documents

       PNG 1.0 specification, October 1996:

	      RFC 2083

	      ftp://ds.internic.net/rfc/rfc2083.txt
	      or (as a W3C Recommendation) at
	      http://www.w3.org/TR/REC-png.html

AUTHORS

       This man page: Glenn Randers-Pehrson

       Portable Network Graphics (PNG) Specification Version 1.2 (July 8, 1999): Glenn Randers-Pehrson and others (png-list@ccrc.wustl.edu).

       Portable Network Graphics (PNG) Specification Version 1.0 (October 1, 1996): Thomas Boutell and others (png-list@ccrc.wustl.edu).

COPYRIGHT NOTICE

       The PNG-1.2 specification is copyright (c) 1999 Glenn Randers-Pehrson.  See the specification for conditions of use and distribution.

       The  PNG-1.0  specification  is	copyright (c) 1996 Massachussets Institute of Technology.  See the specification for conditions of use and
       distribution.

								  April 15, 2002							    PNG(5)