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<div class="breadcrumb"><a href="/">Home</a> » <a href="/licenses">Licenses</a></div>

<h1 property="dc:title">libpng License</h1>

<h2 style="color: #003F69;">Full name</h2>
    <div property="rdfs:label"><p style="margin-left: 20px;">libpng License</p></div>

<h2 style="color: #003F69;">Short identifier</h2>
    <p style="margin-left: 20px;"><code property="spdx:licenseId">Libpng</code></p>

<h2 style="color: #003F69;">Other web pages for this license</h2>
    <p style="margin-left: 20px;">				<li><a href="http://www.libpng.org/pub/png/src/libpng-LICENSE.txt" rel="owl:sameAs">http://www.libpng.org/pub/png/src/libpng-LICENSE.txt</a></li>

</p>

<h2 style="color: #003F69;" id="notes">Notes</h2>
    <p style="margin-left: 20px;">None</p>

<h2 style="color: #003F69;" id="licenseText">Text</h2>

<div property="spdx:licenseText" class="license-text">
This copy of the libpng notices is provided for your convenience.  In case of
<br/>
any discrepancy between this copy and the notices in the file png.h that is
<br/>
included in the libpng distribution, the latter shall prevail.
<p>COPYRIGHT NOTICE, DISCLAIMER, and LICENSE:
</p>
<p>If you modify libpng you may insert additional notices immediately following
<br/>
this sentence.
</p>
<p>This code is released under the libpng license.
</p>
<p>libpng versions 1.2.6, August 15, 2004, through 1.4.5, December 9, 2010, are
<br/>
Copyright (c) 2004, 2006-2010 Glenn Randers-Pehrson, and are
<br/>
distributed according to the same disclaimer and license as libpng-1.2.5
<br/>
with the following individual added to the list of Contributing Authors
</p>
<p>   Cosmin Truta
</p>
<p>libpng versions 1.0.7, July 1, 2000, through 1.2.5 - October 3, 2002, are
<br/>
Copyright (c) 2000-2002 Glenn Randers-Pehrson, and are
<br/>
distributed according to the same disclaimer and license as libpng-1.0.6
<br/>
with the following individuals added to the list of Contributing Authors
</p>
<p>   Simon-Pierre Cadieux
<br/>
   Eric S. Raymond
<br/>
   Gilles Vollant
</p>
<p>and with the following additions to the disclaimer:
</p>
<p>   There is no warranty against interference with your enjoyment of the
<br/>
   library or against infringement.  There is no warranty that our
<br/>
   efforts or the library will fulfill any of your particular purposes
<br/>
   or needs.  This library is provided with all faults, and the entire
<br/>
   risk of satisfactory quality, performance, accuracy, and effort is with
<br/>
   the user.
</p>
<p>libpng versions 0.97, January 1998, through 1.0.6, March 20, 2000, are
<br/>
Copyright (c) 1998, 1999 Glenn Randers-Pehrson, and are
<br/>
distributed according to the same disclaimer and license as libpng-0.96,
<br/>
with the following individuals added to the list of Contributing Authors:
</p>
<p>   Tom Lane
<br/>
   Glenn Randers-Pehrson
<br/>
   Willem van Schaik
</p>
<p>libpng versions 0.89, June 1996, through 0.96, May 1997, are
<br/>
Copyright (c) 1996, 1997 Andreas Dilger
<br/>
Distributed according to the same disclaimer and license as libpng-0.88,
<br/>
with the following individuals added to the list of Contributing Authors:
</p>
<p>   John Bowler
<br/>
   Kevin Bracey
<br/>
   Sam Bushell
<br/>
   Magnus Holmgren
<br/>
   Greg Roelofs
<br/>
   Tom Tanner
</p>
<p>libpng versions 0.5, May 1995, through 0.88, January 1996, are
<br/>
Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.
</p>
<p>For the purposes of this copyright and license, &quot;Contributing Authors&quot;
<br/>
is defined as the following set of individuals:
</p>
<p>   Andreas Dilger
<br/>
   Dave Martindale
<br/>
   Guy Eric Schalnat
<br/>
   Paul Schmidt
<br/>
   Tim Wegner
</p>
<p>The PNG Reference Library is supplied &quot;AS IS&quot;.  The Contributing Authors
<br/>
and Group 42, Inc. disclaim all warranties, expressed or implied,
<br/>
including, without limitation, the warranties of merchantability and of
<br/>
fitness for any purpose.  The Contributing Authors and Group 42, Inc.
<br/>
assume no liability for direct, indirect, incidental, special, exemplary,
<br/>
or consequential damages, which may result from the use of the PNG
<br/>
Reference Library, even if advised of the possibility of such damage.
</p>
<p>Permission is hereby granted to use, copy, modify, and distribute this
<br/>
source code, or portions hereof, for any purpose, without fee, subject
<br/>
to the following restrictions:
</p>
<p>1. The origin of this source code must not be misrepresented.
</p>
<p>2. Altered versions must be plainly marked as such and must not
<br/>
   be misrepresented as being the original source.
</p>
<p>3. This Copyright notice may not be removed or altered from any
<br/>
   source or altered source distribution.
</p>
<p>The Contributing Authors and Group 42, Inc. specifically permit, without
<br/>
fee, and encourage the use of this source code as a component to
<br/>
supporting the PNG file format in commercial products.  If you use this
<br/>
source code in a product, acknowledgment is not required but would be
<br/>
appreciated.
</p>
<p>
<br/>
A &quot;png_get_copyright&quot; function is available, for convenient use in &quot;about&quot;
<br/>
boxes and the like:
</p>
<p>   printf(&quot;%s&quot;,png_get_copyright(NULL));
</p>
<p>Also, the PNG logo (in PNG format, of course) is supplied in the
<br/>
files &quot;pngbar.png&quot; and &quot;pngbar.jpg (88x31) and &quot;pngnow.png&quot; (98x31).
</p>
<p>Libpng is OSI Certified Open Source Software.  OSI Certified Open Source is a
<br/>
certification mark of the Open Source Initiative.
</p>
<p>Glenn Randers-Pehrson
<br/>
glennrp at users.sourceforge.net
<br/>
December 9, 2010</p>
</div>

<h2 style="color: #003F69;"  id="licenseText">Standard License Header</h2>
<div property="spdx:standardLicenseHeader" class="license-text"></div>

<!--
<h2 style="color: #003F69;"  id=standardLicenseTemplate>License Template</h2>
<div property="spdx:licenseTemplate" class="license-template">This copy of the libpng notices is provided for your convenience.  In case of
<br/>
any discrepancy between this copy and the notices in the file png.h that is
<br/>
included in the libpng distribution, the latter shall prevail.
<p>COPYRIGHT NOTICE, DISCLAIMER, and LICENSE:
</p>
<p>If you modify libpng you may insert additional notices immediately following
<br/>
this sentence.
</p>
<p>This code is released under the libpng license.
</p>
<p>libpng versions 1.2.6, August 15, 2004, through 1.4.5, December 9, 2010, are
<br/>
Copyright (c) 2004, 2006-2010 Glenn Randers-Pehrson, and are
<br/>
distributed according to the same disclaimer and license as libpng-1.2.5
<br/>
with the following individual added to the list of Contributing Authors
</p>
<p>   Cosmin Truta
</p>
<p>libpng versions 1.0.7, July 1, 2000, through 1.2.5 - October 3, 2002, are
<br/>
Copyright (c) 2000-2002 Glenn Randers-Pehrson, and are
<br/>
distributed according to the same disclaimer and license as libpng-1.0.6
<br/>
with the following individuals added to the list of Contributing Authors
</p>
<p>   Simon-Pierre Cadieux
<br/>
   Eric S. Raymond
<br/>
   Gilles Vollant
</p>
<p>and with the following additions to the disclaimer:
</p>
<p>   There is no warranty against interference with your enjoyment of the
<br/>
   library or against infringement.  There is no warranty that our
<br/>
   efforts or the library will fulfill any of your particular purposes
<br/>
   or needs.  This library is provided with all faults, and the entire
<br/>
   risk of satisfactory quality, performance, accuracy, and effort is with
<br/>
   the user.
</p>
<p>libpng versions 0.97, January 1998, through 1.0.6, March 20, 2000, are
<br/>
Copyright (c) 1998, 1999 Glenn Randers-Pehrson, and are
<br/>
distributed according to the same disclaimer and license as libpng-0.96,
<br/>
with the following individuals added to the list of Contributing Authors:
</p>
<p>   Tom Lane
<br/>
   Glenn Randers-Pehrson
<br/>
   Willem van Schaik
</p>
<p>libpng versions 0.89, June 1996, through 0.96, May 1997, are
<br/>
Copyright (c) 1996, 1997 Andreas Dilger
<br/>
Distributed according to the same disclaimer and license as libpng-0.88,
<br/>
with the following individuals added to the list of Contributing Authors:
</p>
<p>   John Bowler
<br/>
   Kevin Bracey
<br/>
   Sam Bushell
<br/>
   Magnus Holmgren
<br/>
   Greg Roelofs
<br/>
   Tom Tanner
</p>
<p>libpng versions 0.5, May 1995, through 0.88, January 1996, are
<br/>
Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.
</p>
<p>For the purposes of this copyright and license, &quot;Contributing Authors&quot;
<br/>
is defined as the following set of individuals:
</p>
<p>   Andreas Dilger
<br/>
   Dave Martindale
<br/>
   Guy Eric Schalnat
<br/>
   Paul Schmidt
<br/>
   Tim Wegner
</p>
<p>The PNG Reference Library is supplied &quot;AS IS&quot;.  The Contributing Authors
<br/>
and Group 42, Inc. disclaim all warranties, expressed or implied,
<br/>
including, without limitation, the warranties of merchantability and of
<br/>
fitness for any purpose.  The Contributing Authors and Group 42, Inc.
<br/>
assume no liability for direct, indirect, incidental, special, exemplary,
<br/>
or consequential damages, which may result from the use of the PNG
<br/>
Reference Library, even if advised of the possibility of such damage.
</p>
<p>Permission is hereby granted to use, copy, modify, and distribute this
<br/>
source code, or portions hereof, for any purpose, without fee, subject
<br/>
to the following restrictions:
</p>
<p>1. The origin of this source code must not be misrepresented.
</p>
<p>2. Altered versions must be plainly marked as such and must not
<br/>
   be misrepresented as being the original source.
</p>
<p>3. This Copyright notice may not be removed or altered from any
<br/>
   source or altered source distribution.
</p>
<p>The Contributing Authors and Group 42, Inc. specifically permit, without
<br/>
fee, and encourage the use of this source code as a component to
<br/>
supporting the PNG file format in commercial products.  If you use this
<br/>
source code in a product, acknowledgment is not required but would be
<br/>
appreciated.
</p>
<p>
<br/>
A &quot;png_get_copyright&quot; function is available, for convenient use in &quot;about&quot;
<br/>
boxes and the like:
</p>
<p>   printf(&quot;%s&quot;,png_get_copyright(NULL));
</p>
<p>Also, the PNG logo (in PNG format, of course) is supplied in the
<br/>
files &quot;pngbar.png&quot; and &quot;pngbar.jpg (88x31) and &quot;pngnow.png&quot; (98x31).
</p>
<p>Libpng is OSI Certified Open Source Software.  OSI Certified Open Source is a
<br/>
certification mark of the Open Source Initiative.
</p>
<p>Glenn Randers-Pehrson
<br/>
glennrp at users.sourceforge.net
<br/>
December 9, 2010</p></div> -->

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