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Annotated edit history of png(5) version 1, including all changes. View license author blame.
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1 perry 1 PNG
2 !!!PNG
3 NAME
4 DESCRIPTION
5 SEE ALSO
6 AUTHORS
7 COPYRIGHT NOTICE
8 ----
9 !!NAME
10
11
12 png - Portable Network Graphics (PNG) format
13 !!DESCRIPTION
14
15
16 PNG (Portable Network Graphics) is an extensible file format
17 for the lossless, portable, well-compressed storage of
18 raster images. PNG provides a patent-free replacement for
19 GIF and can also replace many common uses of TIFF.
20 Indexed-color, grayscale, and truecolor images are
21 supported, plus an optional alpha channel. Sample depths
22 range from 1 to 16 bits.
23
24
25 PNG is designed to work well in online viewing applications,
26 such as the World Wide Web, so it is fully streamable with a
27 progressive display option. PNG is robust, providing both
28 full file integrity checking and fast, simple detection of
29 common transmission errors. Also, PNG can store gamma and
30 chromaticity data for improved color matching on
31 heterogeneous platforms.
32 !!SEE ALSO
33
34
35 libpng(3), zlib(3), deflate(5), and
36 zlib(5).
37
38
39 PNG 1.2 specification, July 1999:
40
41
42 http://www.libpng.org/pub/png
43 or ftp://ftp.uu.net/graphics/png/documents
44
45
46 PNG 1.0 specification, October 1996:
47
48
49 RFC 2083
50
51
52 ftp://ds.internic.net/rfc/rfc2083.txt
53 or (as a W3C Recommendation) at
54 http://www.w3.org/TR/REC-png.html
55 !!AUTHORS
56
57
58 This man page: Glenn Randers-Pehrson
59
60
61 Portable Network Graphics (PNG) Specification Version 1.2
62 (July 8, 1999): Glenn Randers-Pehrson and others
63 (png-list@ccrc.wustl.edu).
64
65
66 Portable Network Graphics (PNG) Specification Version 1.0
67 (October 1, 1996): Thomas Boutell and others
68 (png-list@ccrc.wustl.edu).
69 !!COPYRIGHT NOTICE
70
71
72 The PNG-1.2 specification is copyright (c) 1999 Glenn
73 Randers-Pehrson. See the specification for conditions of use
74 and distribution.
75
76
77 The PNG-1.0 specification is copyright (c) 1996
78 Massachussets Institute of Technology. See the specification
79 for conditions of use and distribution.
80 ----
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