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OpenSolaris 2009.06 - man page for png (opensolaris section 4)

png.4(4)				   File Formats 				 png.4(4)

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, and 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,
       and is fully streamable with a progressive display option.  PNG is  robust,  and  provides
       both  full  file  integrity  checking,  and  fast  simple detection of common transmission
       errors. PNG can store gamma and chromaticity data for improved color matching on heteroge-
       neous platforms.

ATTRIBUTES
       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWpng			   |
       +-----------------------------+-----------------------------+
       |Interface stability	     |Volatile			   |
       +-----------------------------+-----------------------------+

SEE ALSO
       libpng(3), zlib(3)

       PNG 1.2 specification, July 1999: http://www.libpng.org/pub/png or ftp://ftp.uu.net/graph-
       ics/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

NOTES
       This  man page was originally written by Glenn Randers-Pehrson. Updated by Breda McColgan,
       Sun Microsystems Inc., 2004.

SunOS 5.11				   26 Mar 2004					 png.4(4)


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