| 1 | .TH PNG 5 "May 8, 2008"
|
|---|
| 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://ftp.rfc-editor.org:/in-notes/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 |
|
|---|
