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libpng License
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libpng License
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Libpng
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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 1.4.5, December 9, 2010, are Copyright (c) 2004,
2006-2010 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 Digger
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).
Libpng is OSI Certified Open Source Software. OSI Certified Open Source is a certification mark of the
Open Source Initiative.
Glenn Randers-Pehrson
glennrp at users.sourceforge.net
December 9, 2010
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