Libpng – Global Mapper

PNG Reference Library License version 1 (for libpng 0.5 through 1.6.35)

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libpng versions 1.0.7, July 1, 2000, through 1.6.35, July 15, 2018 are

derived from libpng-1.0.6, 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

Mans Rullgard

Cosmin Truta

Gilles Vollant

James Yu

Mandar Sahastrabuddhe

Google Inc.

Vadim Barkov

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.

Some files in the "contrib" directory and some configure-generated

files that are distributed with libpng have other copyright owners, and

are released under other open source licenses.

libpng versions 0.97, January 1998, through 1.0.6, March 20, 2000, are

libpng-0.96, 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

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

Some files in the "scripts" directory have other copyright owners,

but are released under this license.

libpng versions 0.5, May 1995, through 0.88, January 1996, are

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.