1 ## libpng v1.6.23
   2 
   3 ### libpng License
   4 <pre>
   5 
   6 This copy of the libpng notices is provided for your convenience.  In case of
   7 any discrepancy between this copy and the notices in the file png.h that is
   8 included in the libpng distribution, the latter shall prevail.
   9 
  10 COPYRIGHT NOTICE, DISCLAIMER, and LICENSE:
  11 
  12 If you modify libpng you may insert additional notices immediately following
  13 this sentence.
  14 
  15 This code is released under the libpng license.
  16 
  17 libpng versions 1.0.7, July 1, 2000 through 1.6.23, June 9, 2016 are
  18 Copyright (c) 2000-2002, 2004, 2006-2016 Glenn Randers-Pehrson, are
  19 derived from libpng-1.0.6, and are distributed according to the same
  20 disclaimer and license as libpng-1.0.6 with the following individuals
  21 added to the list of Contributing Authors:
  22 
  23    Simon-Pierre Cadieux
  24    Eric S. Raymond
  25    Mans Rullgard
  26    Cosmin Truta
  27    Gilles Vollant
  28    James Yu
  29 
  30 and with the following additions to the disclaimer:
  31 
  32    There is no warranty against interference with your enjoyment of the
  33    library or against infringement.  There is no warranty that our
  34    efforts or the library will fulfill any of your particular purposes
  35    or needs.  This library is provided with all faults, and the entire
  36    risk of satisfactory quality, performance, accuracy, and effort is with
  37    the user.
  38 
  39 Some files in the "contrib" directory and some configure-generated
  40 files that are distributed with libpng have other copyright owners and
  41 are released under other open source licenses.
  42 
  43 libpng versions 0.97, January 1998, through 1.0.6, March 20, 2000, are
  44 Copyright (c) 1998-2000 Glenn Randers-Pehrson, are derived from
  45 libpng-0.96, and are distributed according to the same disclaimer and
  46 license as libpng-0.96, with the following individuals added to the list
  47 of Contributing Authors:
  48 
  49    Tom Lane
  50    Glenn Randers-Pehrson
  51    Willem van Schaik
  52 
  53 libpng versions 0.89, June 1996, through 0.96, May 1997, are
  54 Copyright (c) 1996-1997 Andreas Dilger, are derived from libpng-0.88,
  55 and are distributed according to the same disclaimer and license as
  56 libpng-0.88, with the following individuals added to the list of
  57 Contributing Authors:
  58 
  59    John Bowler
  60    Kevin Bracey
  61    Sam Bushell
  62    Magnus Holmgren
  63    Greg Roelofs
  64    Tom Tanner
  65 
  66 Some files in the "scripts" directory have other copyright owners
  67 but are released under this license.
  68 
  69 libpng versions 0.5, May 1995, through 0.88, January 1996, are
  70 Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.
  71 
  72 For the purposes of this copyright and license, "Contributing Authors"
  73 is defined as the following set of individuals:
  74 
  75    Andreas Dilger
  76    Dave Martindale
  77    Guy Eric Schalnat
  78    Paul Schmidt
  79    Tim Wegner
  80 
  81 The PNG Reference Library is supplied "AS IS".  The Contributing Authors
  82 and Group 42, Inc. disclaim all warranties, expressed or implied,
  83 including, without limitation, the warranties of merchantability and of
  84 fitness for any purpose.  The Contributing Authors and Group 42, Inc.
  85 assume no liability for direct, indirect, incidental, special, exemplary,
  86 or consequential damages, which may result from the use of the PNG
  87 Reference Library, even if advised of the possibility of such damage.
  88 
  89 Permission is hereby granted to use, copy, modify, and distribute this
  90 source code, or portions hereof, for any purpose, without fee, subject
  91 to the following restrictions:
  92 
  93   1. The origin of this source code must not be misrepresented.
  94 
  95   2. Altered versions must be plainly marked as such and must not
  96      be misrepresented as being the original source.
  97 
  98   3. This Copyright notice may not be removed or altered from any
  99      source or altered source distribution.
 100 
 101 The Contributing Authors and Group 42, Inc. specifically permit, without
 102 fee, and encourage the use of this source code as a component to
 103 supporting the PNG file format in commercial products.  If you use this
 104 source code in a product, acknowledgment is not required but would be
 105 appreciated.
 106 
 107 END OF COPYRIGHT NOTICE, DISCLAIMER, and LICENSE.
 108 
 109 </pre>