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PNG
!!!PNG
NAME
DESCRIPTION
SEE ALSO
AUTHORS
COPYRIGHT NOTICE
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!!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 provides 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 display 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), and
zlib(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.
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Last edited on Tuesday, June 4, 2002 12:30:40 am by "perry"

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