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{{ infobox software
| name                   = ImageMagick
| logo                   = [[Image:Imagemagick-logo.png|200px]]
| caption                = ImageMagick logo
| developer              = ImageMagick Studio LLC
| programming language   = [[C (programming language)|C]]
| latest_release_version = 6.5.4-10
| latest_release_date    = {{release date and age|2009|08|06}}
| operating_system       = [[Cross-platform]] 
| genre                  = Image manipulation
| license                = [http://www.imagemagick.org/script/license.php ImageMagick License]
| website                = [http://www.imagemagick.org/ www.imagemagick.org]
}}{{criticism}}

'''ImageMagick''' is an [[open source]]<ref>[http://www.imagemagick.org/script/license.php ImageMagick license]</ref> [[software suite]] for displaying, converting, and [[image editing|editing]] [[raster graphics|raster image]] files. It can read and write over 100 [[image file formats]]. ImageMagick is licensed under the [http://www.imagemagick.org/script/license.php ImageMagick License], a [[BSD licenses|BSD-style]] license.

== Features ==
The software mainly consists of a number of [[command-line interface]] utilities for manipulating images. ImageMagick does not have a GUI based interface to edit images, as do [[Adobe Photoshop]] and [[GIMP]], but instead modifies existing images as directed by various command-line parameters. Nevertheless, ImageMagick also includes an [[X Window]] [[graphical user interface]] for rendering and manipulating images called IMDisplay and [[Application programming interface|API]] libraries for many programming languages. The program uses [[Magic number (programming)|magic numbers]] to identify image [[file format]]s.

A number of programs, such as [[MediaWiki]], [[phpBB]] and [[vBulletin]], can use ImageMagick to create image [[thumbnail]]s if it is installed. ImageMagick is also used by other programs, such as [[LyX]], for converting images.

ImageMagick has a fully integrated [[Perl]] [[API]] called PerlMagick<ref>[http://www.imagemagick.org/script/perl-magick.php PerlMagick, Perl API for ImageMagick]</ref>.

===File format conversion===
One of the basic and thoroughly-implemented features of ImageMagick is its ability to efficiently and accurately convert images between different file formats. Refer to the ImageMagick web site for the [http://www.imagemagick.org/script/formats.php extensive list] of supported formats.

===[[Color quantization]]===
The number of colors in an image can be reduced to an arbitrary number and this is done by intelligently weighing the most prominent color values present among the pixels of the image.  Note that many other image handling applications do not support a color palette of an arbitrary number of colors; if, for example, you reduce an image to 13 colors via ImageMagick some applications will open it but some will regard it as corrupted.

A related capability is the [[posterization]] artistic effect, which also reduces the number of colors represented in an image.  The difference between this and standard color quantization is that while in standard quantization the final palette is selected based upon a weighting of the prominence of existing colors in the image, posterization creates a palette of colors smoothly distributed across the spectrum represented in the image.  Whereas with standard color quantization all of the final color values are ones that were in the original image, the color values in a posterized image may not have been present in the original image but are in between the original color values.

====Dithering====
A fine control is provided for the [[dither#Digital_photography_and_image_processing|dithering]] that occurs during color and shading alterations, including the ability to generate [[halftone]] dithering.

===Liquid rescaling===
Recently support for [[seam carving]] (content-aware image resizing) ("liquid rescaling" of images) has been added. This feature allows, for example, rescaling 3:4 images into 16:9 images without distorting the image.

===Artistic effects===
ImageMagick includes a variety of filters and features intended to create artistic effects:
* [http://www.imagemagick.org/Usage/transform/#charcoal Charcoal Sketch Transform]
* [[Posterization]]

== Distribution ==
ImageMagick is [[cross-platform]], and runs on all recent versions of [[Microsoft Windows]] (except Windows 95), and [[Unix-like]] systems including [[Mac OS X]], [[Linux]], [[Solaris (operating system)|Solaris]], and [[FreeBSD]]. The project's [[source code]] can be compiled for other systems, including [[AmigaOS 4|AmigaOS 4.0]] and [[MorphOS]].

== Related software ==
[[GraphicsMagick]] is a [[Fork (software development)|fork]] of ImageMagick 5.5.2 emphasizing the cross-release stability of the programming [[Application programming interface|API]] and [[user interface]].

== See also ==
{{portal|Free software|Free Software Portal Logo.svg}} 

* [[GraphicsMagick]]
* [[DevIL]]
* [[GD Graphics Library]]
* [[Netpbm]]

== References ==
{{reflist}}

== External links ==
{{Commons cat}}
* [http://www.imagemagick.org/ ImageMagick] - Official project homepage
* [http://www.imagemagick.org/Usage/ ImageMagick] Common Usage
* [http://www.linux.com/articles/44594] Advanced image editing from the command line with ImageMagick

[[Category:Graphics software]]
[[Category:Free graphics software]]
[[Category:Free software programmed in C]]
[[Category:IRIX software]]
[[Category:Java platform software]]
[[Category:Graphics libraries]]
{{wiki}}{{2009}}

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