projects / wxWidgets.git / blame
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1 | .TH PNG 5 "September 8, 2007" |
| 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" | |
| 21 | .IR libpng(3) ", " zlib(3) ", " deflate(5) ", and " zlib(5) | |
| 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 | |
| 30 | http://www.libpng.org/pub/png | |
| 31 | .LP | |
| 32 | PNG 1.0 specification, October 1996: | |
| 33 | .IP | |
| 34 | .br | |
| 35 | RFC 2083 | |
| 36 | .IP | |
| 37 | .br | |
| 38 | ftp://ds.internic.net/rfc/rfc2083.txt | |
| 39 | .br | |
| 40 | or (as a W3C Recommendation) at | |
| 41 | .br | |
| 42 | http://www.w3.org/TR/REC-png.html | |
| 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 |