BigPNG - Read and Write Very Large PNG files
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Based on a suggestion by Robert Lesac.


The important features of this plugin are:

- bitmap, indexed, grey scale, and RGB modes are supported,
  with optional alpha

- in grey scale and RGB modes, an optional alpha channel
  and both 8- and 16-bit depths are supported

- where built with a CS or later SDK, and running in Photoshop CS
  or later, the plugin will use the 32-bit document size fields
  to remove the historical 30,000 pixel limit

- images are processed in pieces (by default, no larger than 16MB),
  allowing the processing of images larger than memory.


PNG reading and writing uses the LibPNG library,
http://www.libpng.org/pub/png/libpng.html
Copyright (c) 1998-2010 Glenn Randers-Pehrson
Copyright (c) 1996-1997 Andreas Dilger
Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.

libpng calls upon zlib for compression, http://www.zlib.net/
Copyright (C) 1995-2005 Jean-loup Gailly and Mark Adler.
  


    This file is part of BigPNG, a File Format plugin for Adobe Photoshop(R)
    Copyright (C) 2002-2010 Toby Thain, toby@telegraphics.com.au

    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA