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blob: c2da95c458e1f1095e721e88b7f98eee658becec [file] [log] [blame]
xNombred07bb0d2020-03-10 20:17:12 +0100[diff] [blame]1.TH PNG 5 "April 14, 2019"
The Android Open Source Project893912b2009-03-03 19:30:05 -0800[diff] [blame]2.SH NAME
3png \- Portable Network Graphics (PNG) format
xNombred07bb0d2020-03-10 20:17:12 +0100[diff] [blame]4
The Android Open Source Project893912b2009-03-03 19:30:05 -0800[diff] [blame]5.SH DESCRIPTION
6PNG (Portable Network Graphics) is an extensible file format for the
xNombred07bb0d2020-03-10 20:17:12 +0100[diff] [blame]7lossless, portable, well-compressed storage of raster images. PNG
8provides a patent-free replacement for GIF, and can also replace many
The Android Open Source Project893912b2009-03-03 19:30:05 -0800[diff] [blame]9common uses of TIFF. Indexed-color, grayscale, and truecolor images are
xNombred07bb0d2020-03-10 20:17:12 +0100[diff] [blame]10supported, plus an optional alpha channel. Sample depths range from
The Android Open Source Project893912b2009-03-03 19:30:05 -0800[diff] [blame]111 to 16 bits.
12.br
xNombred07bb0d2020-03-10 20:17:12 +0100[diff] [blame]13PNG is designed to work well in online viewing applications, such
14as the World Wide Web, so it is fully streamable with a progressive
15display option. PNG is robust, providing both full file integrity
16checking and fast, simple detection of common transmission errors.
17Also, PNG can store gamma and chromaticity data for improved color
18matching on heterogeneous platforms.
The Android Open Source Project893912b2009-03-03 19:30:05 -0800[diff] [blame]19
20.SH "SEE ALSO"
Chris Craikb50c2172013-07-29 15:28:30 -0700[diff] [blame]21.BR "libpng"(3), " libpngpf"(3), " zlib"(3), " deflate"(5), " " and " zlib"(5)
The Android Open Source Project893912b2009-03-03 19:30:05 -0800[diff] [blame]22.LP
xNombred07bb0d2020-03-10 20:17:12 +0100[diff] [blame]23PNG Specification (Second Edition), November 2003:
The Android Open Source Project893912b2009-03-03 19:30:05 -0800[diff] [blame]24.IP
25.br
xNombred07bb0d2020-03-10 20:17:12 +0100[diff] [blame]26https://www.w3.org/TR/2003/REC-PNG-20031110/
27.LP
28PNG 1.2 Specification, July 1999:
The Android Open Source Project893912b2009-03-03 19:30:05 -0800[diff] [blame]29.IP
30.br
Leon Scroggins III3cc83ac2017-10-06 11:02:56 -0400[diff] [blame]31https://png-mng.sourceforge.io/pub/png/spec/1.2/
The Android Open Source Project893912b2009-03-03 19:30:05 -0800[diff] [blame]32.LP
xNombred07bb0d2020-03-10 20:17:12 +0100[diff] [blame]33PNG 1.0 Specification, October 1996:
The Android Open Source Project893912b2009-03-03 19:30:05 -0800[diff] [blame]34.IP
35.br
36RFC 2083
The Android Open Source Project893912b2009-03-03 19:30:05 -0800[diff] [blame]37.br
Leon Scroggins III3cc83ac2017-10-06 11:02:56 -0400[diff] [blame]38https://www.ietf.org/rfc/rfc2083.txt
xNombred07bb0d2020-03-10 20:17:12 +0100[diff] [blame]39.IP
The Android Open Source Project893912b2009-03-03 19:30:05 -0800[diff] [blame]40.br
xNombred07bb0d2020-03-10 20:17:12 +0100[diff] [blame]41or W3C Recommendation
The Android Open Source Project893912b2009-03-03 19:30:05 -0800[diff] [blame]42.br
Leon Scroggins III3cc83ac2017-10-06 11:02:56 -0400[diff] [blame]43https://www.w3.org/TR/REC-png-961001
xNombred07bb0d2020-03-10 20:17:12 +0100[diff] [blame]44
The Android Open Source Project893912b2009-03-03 19:30:05 -0800[diff] [blame]45.SH AUTHORS
xNombred07bb0d2020-03-10 20:17:12 +0100[diff] [blame]46This man page: Cosmin Truta, Glenn Randers-Pehrson
The Android Open Source Project893912b2009-03-03 19:30:05 -0800[diff] [blame]47.LP
48Portable Network Graphics (PNG) Specification (Second Edition)
49Information technology - Computer graphics and image processing -
50Portable Network Graphics (PNG): Functional specification.
51ISO/IEC 15948:2003 (E) (November 10, 2003): David Duce and others.
52.LP
53Portable Network Graphics (PNG) Specification Version 1.2 (July 8, 1999):
54Glenn Randers-Pehrson and others (png-list).
55.LP
56Portable Network Graphics (PNG) Specification Version 1.0 (October 1, 1996):
57Thomas Boutell and others (png-list).
The Android Open Source Project893912b2009-03-03 19:30:05 -0800[diff] [blame]58
xNombred07bb0d2020-03-10 20:17:12 +0100[diff] [blame]59.SH COPYRIGHT
The Android Open Source Project893912b2009-03-03 19:30:05 -0800[diff] [blame]60.LP
xNombred07bb0d2020-03-10 20:17:12 +0100[diff] [blame]61This man page is
62.br
63Copyright (c) 2018-2019 Cosmin Truta.
64.br
65Copyright (c) 1998-2006 Glenn Randers-Pehrson.
66.br
67See png.h for conditions of use and distribution.
The Android Open Source Project893912b2009-03-03 19:30:05 -0800[diff] [blame]68.LP
69The PNG Specification (Second Edition) is
xNombred07bb0d2020-03-10 20:17:12 +0100[diff] [blame]70.br
The Android Open Source Project893912b2009-03-03 19:30:05 -0800[diff] [blame]71Copyright (c) 2003 W3C. (MIT, ERCIM, Keio), All Rights Reserved.
72.LP
xNombred07bb0d2020-03-10 20:17:12 +0100[diff] [blame]73The PNG-1.2 Specification is
74.br
75Copyright (c) 1999 Glenn Randers-Pehrson.
76.br
The Android Open Source Project893912b2009-03-03 19:30:05 -0800[diff] [blame]77See the specification for conditions of use and distribution.
78.LP
xNombred07bb0d2020-03-10 20:17:12 +0100[diff] [blame]79The PNG-1.0 Specification is
80.br
81Copyright (c) 1996 Massachusetts Institute of Technology.
82.br
83See the specification for conditions of use and distribution.
The Android Open Source Project893912b2009-03-03 19:30:05 -0800[diff] [blame]84.\" end of man page