libpng versions 0.89, June 1996, through 0.96, May 1997, are Copyright (c) 1996, 1997
Andreas Dilger Distributed according to the same disclaimer and license as libpng-0.88,
with the following individuals added to the list of Contributing Authors:
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:
Guy Eric Schalnat
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
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
Also, the PNG logo (in PNG format, of course) is supplied in the files "pngbar.png" and
"pngbar.jpg (88x31) and "pngnow.png" (98x31).