1 libpng version 1.2.50 - July 10, 2012
2 Copyright (c) 1998-2012 Glenn Randers-Pehrson
3 (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
4 (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
6 COPYRIGHT NOTICE, DISCLAIMER, and LICENSE:
8 If you modify libpng you may insert additional notices immediately following
11 This code is released under the libpng license.
13 libpng versions 1.2.6, August 15, 2004, through 1.2.50, July 10, 2012, are
14 Copyright (c) 2004, 2006-2011 Glenn Randers-Pehrson, and are
15 distributed according to the same disclaimer and license as libpng-1.2.5
16 with the following individual added to the list of Contributing Authors:
20 libpng versions 1.0.7, July 1, 2000, through 1.2.5, October 3, 2002, are
21 Copyright (c) 2000-2002 Glenn Randers-Pehrson, and are
22 distributed according to the same disclaimer and license as libpng-1.0.6
23 with the following individuals added to the list of Contributing Authors:
29 and with the following additions to the disclaimer:
31 There is no warranty against interference with your enjoyment of the
32 library or against infringement. There is no warranty that our
33 efforts or the library will fulfill any of your particular purposes
34 or needs. This library is provided with all faults, and the entire
35 risk of satisfactory quality, performance, accuracy, and effort is with
38 libpng versions 0.97, January 1998, through 1.0.6, March 20, 2000, are
39 Copyright (c) 1998, 1999, 2000 Glenn Randers-Pehrson, and are
40 distributed according to the same disclaimer and license as libpng-0.96,
41 with the following individuals added to the list of Contributing Authors:
47 libpng versions 0.89, June 1996, through 0.96, May 1997, are
48 Copyright (c) 1996, 1997 Andreas Dilger
49 Distributed according to the same disclaimer and license as libpng-0.88,
50 with the following individuals added to the list of Contributing Authors:
59 libpng versions 0.5, May 1995, through 0.88, January 1996, are
60 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.
62 For the purposes of this copyright and license, "Contributing Authors"
63 is defined as the following set of individuals:
71 The PNG Reference Library is supplied "AS IS". The Contributing Authors
72 and Group 42, Inc. disclaim all warranties, expressed or implied,
73 including, without limitation, the warranties of merchantability and of
74 fitness for any purpose. The Contributing Authors and Group 42, Inc.
75 assume no liability for direct, indirect, incidental, special, exemplary,
76 or consequential damages, which may result from the use of the PNG
77 Reference Library, even if advised of the possibility of such damage.
79 Permission is hereby granted to use, copy, modify, and distribute this
80 source code, or portions hereof, for any purpose, without fee, subject
81 to the following restrictions:
83 1. The origin of this source code must not be misrepresented.
85 2. Altered versions must be plainly marked as such and
86 must not be misrepresented as being the original source.
88 3. This Copyright notice may not be removed or altered from
89 any source or altered source distribution.
91 The Contributing Authors and Group 42, Inc. specifically permit, without
92 fee, and encourage the use of this source code as a component to
93 supporting the PNG file format in commercial products. If you use this
94 source code in a product, acknowledgment is not required but would be
97 A "png_get_copyright" function is available, for convenient use in "about"
100 printf("%s",png_get_copyright(NULL));
102 Also, the PNG logo (in PNG format, of course) is supplied in the
103 files "pngbar.png" and "pngbar.jpg (88x31) and "pngnow.png" (98x31).
105 Libpng is OSI Certified Open Source Software. OSI Certified is a
106 certification mark of the Open Source Initiative.
108 The contributing authors would like to thank all those who helped
109 with testing, bug fixes, and patience. This wouldn't have been
110 possible without all of you.
112 Thanks to Frank J. T. Wojcik for helping with the documentation.