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The Libpng License Notices
This copy of the libpng notices is provided for your convenience. In case of any discrepancy between this copy and the notices
in the file png.h that is included in the libpng distribution, the latter shall prevail.
COPYRIGHT NOTICE, DISCLAIMER, and LICENSE:
If you modify libpng you may insert additional notices immediately following this sentence.
This code is released under the libpng license.
libpng versions 1.2.6, August 15, 2004, through 1.2.41, December 3, 2009, are Copyright (c) 2004, 2006-2009 Glenn Randers-
Pehrson, and are distributed according to the same disclaimer and license as libpng-1.2.5 with the following individual added to
the list of Contributing Authors:
Cosmin Truta
libpng versions 1.0.7, July 1, 2000, through 1.2.5 - October 3, 2002, are Copyright (c) 2000-2002 Glenn Randers-Pehrson, and
are distributed according to the same disclaimer and license as libpng-1.0.6 with the following individuals added to the list of
Contributing Authors:
Simon-Pierre Cadieux
Eric S. Raymond
Gilles Vollant
and with the following additions to the disclaimer:
There is no warranty against interference with your enjoyment of the library or against infringement. There is no warranty that
our efforts or the library will fulfill any of your particular purposes or needs. This library is provided with all faults, and the
entire risk of satisfactory quality, performance, accuracy, and effort is with the user.
libpng versions 0.97, January 1998, through 1.0.6, March 20, 2000, are Copyright (c) 1998, 1999 Glenn Randers-Pehrson, and
are distributed according to the same disclaimer and license as libpng-0.96, with the following individuals added to the list of
Contributing Authors:
Tom Lane
Glenn Randers-Pehrson
Willem van Schaik
libpng versions 0.89, June 1996, through 0.96, May 1997, are Copyright (c) 1996, 1997 Andreas Dilger, and are distributed
according to the same disclaimer and license as libpng-0.88, with the following individuals added to the list of Contributing
Authors:
John Bowler
Kevin Bracey
Sam Bushell
Magnus Holmgren
Greg Roelofs
Tom Tanner
libpng versions 0.5, May 1995, through 0.88, January 1996, are Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.
For the purposes of this copyright and license, “Contributing Authors” is defined as the following set of individuals:
Andreas Dilger
Dave Martindale
Guy Eric Schalnat
Paul Schmidt
Tim Wegner
The PNG Reference Library is supplied “AS IS”. The Contributing Authors and Group 42, Inc. disclaim all warranties, expressed
or implied, including, without limitation, the warranties of merchantability and of fitness for any purpose. The Contributing
Authors and Group 42, Inc. assume no liability for direct, indirect, incidental, special, exemplary, or consequential damages,
which may result from the use of the PNG Reference Library, even if advised of the possibility of such damage.
Permission is hereby granted to use, copy, modify, and distribute this source code, or portions hereof, for any purpose, without
fee, subject to the following restrictions:
1. The origin of this source code must not be misrepresented.
2. Altered versions must be plainly marked as such and must not be misrepresented as being the original source.
3. This Copyright notice may not be removed or altered from any source or altered source distribution.
The Contributing Authors and Group 42, Inc. specifically permit, without fee, and encourage the use of this source code as a
component to supporting the PNG file format in commercial products. If you use this source code in a product, acknowledgment
is not required but would be appreciated.
A “png_get_copyright” function is available, for convenient use in “about” boxes and the like:
printf(“%s”,png_get_copyright(NULL));
Also, the PNG logo (in PNG format, of course) is supplied in the files “pngbar.png” and “pngbar.jpg” (88x31) and “pngnow.png”
(98x31).
