| Matt Sarett | 9ea7569 | 2016-01-08 13:00:42 -0500 | [diff] [blame] | 1 | .TH PNG 5 "December 3, 2015" |
| The Android Open Source Project | 893912b | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 2 | .SH NAME |
| 3 | png \- Portable Network Graphics (PNG) format |
| 4 | .SH DESCRIPTION |
| 5 | PNG (Portable Network Graphics) is an extensible file format for the |
| 6 | lossless, portable, well-compressed storage of raster images. PNG provides |
| 7 | a patent-free replacement for GIF and can also replace many |
| 8 | common uses of TIFF. Indexed-color, grayscale, and truecolor images are |
| 9 | supported, plus an optional alpha channel. Sample depths range from |
| 10 | 1 to 16 bits. |
| 11 | .br |
| 12 | |
| 13 | PNG is designed to work well in online viewing applications, such as the |
| 14 | World Wide Web, so it is fully streamable with a progressive display |
| 15 | option. PNG is robust, providing both full file integrity checking and |
| 16 | fast, simple detection of common transmission errors. Also, PNG can store |
| 17 | gamma and chromaticity data for improved color matching on heterogeneous |
| 18 | platforms. |
| 19 | |
| 20 | .SH "SEE ALSO" |
| Chris Craik | b50c217 | 2013-07-29 15:28:30 -0700 | [diff] [blame] | 21 | .BR "libpng"(3), " libpngpf"(3), " zlib"(3), " deflate"(5), " " and " zlib"(5) |
| The Android Open Source Project | 893912b | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 22 | .LP |
| 23 | PNG specification (second edition), November 2003: |
| 24 | .IP |
| 25 | .br |
| 26 | <http://www.w3.org/TR/2003/REC-PNG-20031110/ |
| 27 | PNG 1.2 specification, July 1999: |
| 28 | .IP |
| 29 | .br |
| Matt Sarett | 9ea7569 | 2016-01-08 13:00:42 -0500 | [diff] [blame] | 30 | http://png-mng.sourceforge.net/pub/png/spec/1.2/ |
| The Android Open Source Project | 893912b | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 31 | .LP |
| 32 | PNG 1.0 specification, October 1996: |
| 33 | .IP |
| 34 | .br |
| 35 | RFC 2083 |
| 36 | .IP |
| 37 | .br |
| Chris Craik | b50c217 | 2013-07-29 15:28:30 -0700 | [diff] [blame] | 38 | ftp://ds.internic.net/rfc/rfc2083.txt |
| The Android Open Source Project | 893912b | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 39 | .br |
| 40 | or (as a W3C Recommendation) at |
| 41 | .br |
| Matt Sarett | 9ea7569 | 2016-01-08 13:00:42 -0500 | [diff] [blame] | 42 | http://www.w3.org/TR/REC-png-961001 |
| The Android Open Source Project | 893912b | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 43 | .SH AUTHORS |
| 44 | This man page: Glenn Randers-Pehrson |
| 45 | .LP |
| 46 | Portable Network Graphics (PNG) Specification (Second Edition) |
| 47 | Information technology - Computer graphics and image processing - |
| 48 | Portable Network Graphics (PNG): Functional specification. |
| 49 | ISO/IEC 15948:2003 (E) (November 10, 2003): David Duce and others. |
| 50 | .LP |
| 51 | Portable Network Graphics (PNG) Specification Version 1.2 (July 8, 1999): |
| 52 | Glenn Randers-Pehrson and others (png-list). |
| 53 | .LP |
| 54 | Portable Network Graphics (PNG) Specification Version 1.0 (October 1, 1996): |
| 55 | Thomas Boutell and others (png-list). |
| 56 | .LP |
| 57 | |
| 58 | |
| 59 | .SH COPYRIGHT NOTICE |
| 60 | .LP |
| 61 | This man page is Copyright (c) 1998-2006 Glenn Randers-Pehrson. See png.h |
| 62 | for conditions of use and distribution. |
| 63 | .LP |
| 64 | The PNG Specification (Second Edition) is |
| 65 | Copyright (c) 2003 W3C. (MIT, ERCIM, Keio), All Rights Reserved. |
| 66 | .LP |
| 67 | The PNG-1.2 specification is copyright (c) 1999 Glenn Randers-Pehrson. |
| 68 | See the specification for conditions of use and distribution. |
| 69 | .LP |
| 70 | The PNG-1.0 specification is copyright (c) 1996 Massachusetts Institute of |
| 71 | Technology. See the specification for conditions of use and distribution. |
| 72 | .LP |
| 73 | .\" end of man page |
| 74 | |