MirOS Manual: png(5)

PNG(5)                       BSD Reference Manual                       PNG(5)

NAME

     png - Portable Network Graphics format

DESCRIPTION

     The png library contains functions dealing with files in the PNG format.
     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-colour, grayscale, and truecolour images are sup-
     ported, 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 op-
     tion. PNG is robust, providing both full file integrity checking and
     fast, simple detection of common transmission errors. Also, PNG can
     storegamma and chromaticity data for improved colour matching on hetero-
     geneous platforms.

FILES

     /usr/include/png.h, /usr/lib/libpng.a

SEE ALSO

     libpng(3), compress(3).

STANDARDS

     The PNG specification, second edition, November 2003
     http://www.w3.org/TR/2003/REC-PNG-20031110/

     The PNG 1.2 specification, July 1999
     http://www.libpng.org/pub/png

     The PNG 1.0 specification, October 1996
     RFC 2083, ftp://ftp.rfc-editor.org:/in-notes/rfc2083.txt
     A W3C draft is at http://www.w3.org/TR/REC-png.html

HISTORY

     The png library became part of the base system with MirOS #8.

AUTHORS

     The current libpng maintainer is Glenn Randers-Pehrson
     <glennrp@users.sourceforge.net>.

     This manual page and the MirOS adaptions are courtesy of
     Thorsten "mirabilos" Glaser <tg@mirbsd.de>.

     For detailed authorship and copyright information, refer to
     /usr/include/png.h.

MirOS BSD #10-current          October 22, 2008                              1

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