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<div class="document" id="graphicsmagick-image-processing-system">
<h1 class="title">GraphicsMagick Image Processing System</h1>
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<tbody valign="top">
<tr><td>Current Release</td>
<td>1.3.12 (Released March 8, 2010) <a class="reference external" href="http://sourceforge.net/projects/graphicsmagick/files/">download release</a></td>
</tr>
<tr><td>Development Snapshots</td>
<td>(Updated frequently) <a class="reference external" href="ftp://ftp.graphicsmagick.org/pub/GraphicsMagick/snapshots/">download development snapshots</a></td>
</tr>
<tr><td>Mercurial Repository</td>
<td>(Updated frequently) <a class="reference external" href="http://graphicsmagick.hg.sourceforge.net/hgweb/graphicsmagick/graphicsmagick/">vist Mercurial repository</a></td>
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<p>Check <a class="reference external" href="http://www.GraphicsMagick.org/">http://www.GraphicsMagick.org/</a> for the latest version of this page.</p>
<p>GraphicsMagick is the swiss army knife of image processing. Comprised
of 282K physical lines (according to David A. Wheeler's <a class="reference external" href="http://www.dwheeler.com/sloccount/">SLOCCount</a>)
of source code in the base package (or 964K including 3rd party
libraries) it provides a robust and efficient collection of tools and
libraries which support reading, writing, and manipulating an image in
over 88 major formats including important formats like DPX, GIF, JPEG,
JPEG-2000, PNG, PDF, PNM, and TIFF.</p>
<p>Image processing is <a class="reference external" href="OpenMP.html">multi-threaded</a> using <a class="reference external" href="http://www.openmp.org/">OpenMP</a> so that CPU-bound
tasks scale linearly as processor cores are added. <a class="reference external" href="http://www.openmp.org/">OpenMP</a> support
requires compilation with GCC 4.2 (or later), or use of any C compiler
supporting at least the <a class="reference external" href="http://www.openmp.org/">OpenMP</a> 2.0 specification.</p>
<p>GraphicsMagick is quite portable, and compiles under almost every general
purpose operating system that runs on 32-bit or 64-bit CPUs.
GraphicsMagick is available for virtually any Unix or Unix-like system,
including Linux. It also runs under <a class="reference external" href="INSTALL-windows.html">Windows</a>
2000 and later (Windows 2000, XP, Vista, and 7), and MacOS-X.</p>
<p>GraphicsMagick supports huge images and has been tested with
gigapixel-size images. GraphicsMagick can create new images on the
fly, making it suitable for building dynamic Web
applications. GraphicsMagick may be used to resize, rotate, sharpen,
color reduce, or add special effects to an image and save the result
in the same or differing image format. Image processing operations are
available from the command line, as well as through C, C++, Perl, PHP,
Python, Tcl, Ruby, or Windows COM programming interfaces. With some
modification, language extensions for ImageMagick may be used.</p>
<p>GraphicsMagick is originally derived from <a class="reference external" href="http://www.imagemagick.org/">ImageMagick</a> 5.5.2 as of
November 2002 but has been completely independent of the ImageMagick
project since then. Since the fork from ImageMagick many improvements
have been made (see <a class="reference external" href="NEWS.html">NEWS</a>) by many <a class="reference external" href="authors.html">authors</a> using an open
development model but without breaking the API or utilities operation.</p>
<p>Here are some reasons to prefer GraphicsMagick over ImageMagick:</p>
<blockquote>
<ul class="simple">
<li>GM is more efficient (see the <a class="reference external" href="benchmarks.html">benchmarks</a>) so it gets the job
done faster using fewer resources.</li>
<li>GM is much smaller and tighter (3-5X smaller installation footprint).</li>
<li>GM is used to process billions of files at the world's largest photo
sites (e.g. <a class="reference external" href="http://www.kitchensoap.com/2009/04/03/slides-from-web20-expo-2009-and-somethin-else-interestin/">Flickr</a> and <a class="reference external" href="http://codeascraft.etsy.com/2010/07/09/batch-processing-millions-of-images/">Etsy</a>).</li>
<li>GM does not does not conflict with other installed software.</li>
<li>GM suffers from fewer security issues and exploits.</li>
<li>GM <a class="reference external" href="http://www.valgrind.org/">valgrind</a>'s 100% clean (memcheck and helgrind).</li>
<li>GM comes with a comprehensive <a class="reference external" href="GraphicsMagick.html">manual page</a>.</li>
<li>GM provides API and ABI stability and managed releases that you can
count on.</li>
<li>GM provides detailed yet comprehensible <a class="reference external" href="Changelog.html">ChangeLog</a> and <a class="reference external" href="NEWS.html">NEWS</a> files.</li>
<li>GM is available for free, and may be used to support both open and
proprietary applications.</li>
<li>GM is distributed under an X11-style license ("MIT License"),
approved by the <a class="reference external" href="http://www.opensource.org/">Open Source Initiative</a>, recommended for use
by the <a class="reference external" href="http://www.osscc.net/en/index.html">OSSCC</a>, and compatible with the <a class="reference external" href="http://www.fsf.org/licenses/licenses.html">GNU GPL</a>.</li>
<li>GM source code is managed in <a class="reference external" href="http://mercurial.selenic.com/">Mercurial</a>, a distributed source
control management tool which supports management of local
changes.</li>
<li>GM developers contribute to other free projects for the public good.</li>
</ul>
</blockquote>
<p>GraphicsMagick is <a class="reference external" href="Copyright.html">copyrighted</a> by the GraphicsMagick
Group as well as many others.</p>
<p>Here are just a few examples of what GraphicsMagick can do:</p>
<blockquote>
<ul class="simple">
<li>Convert an image from one format to another (e.g. TIFF to JPEG)</li>
<li>Resize, rotate, sharpen, color reduce, or add special effects to an
image</li>
<li>Create a montage of image thumbnails</li>
<li>Create a transparent image suitable for use on the Web</li>
<li>Compare two images</li>
<li>Turn a group of images into a GIF animation sequence</li>
<li>Create a composite image by combining several separate images</li>
<li>Draw shapes or text on an image</li>
<li>Decorate an image with a border or frame</li>
<li>Describe the format and characteristics of an image</li>
</ul>
</blockquote>
<p>Copyright © GraphicsMagick Group 2002 - 2011</p>
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