ImageMagick is an image manipulation software. It's available for Linux and Windows.

It's usually included as an additional package in every recent linux distribution (packaged under the name ImageMagick or imagemagick).

For windows it can be downloaded as a binary package on the ImageMagick website. If you don't know which release to choose, choose the Win32 dynamic at 16 bits-per-pixel.

Do not forget to configure the path where ImageMagick is installed in the file Kernel/common/config.inc.php.
On linux you can leave the path empty if the ImageMagick binaries are in the system path (which usually is the case).
On windows be sure to double every backslash character.
e.g.: $GLOBALS["ImageMagickPath"]="C:\\ImageMagick-6.3.5-Q16\\";

Checking ImageMagick is operational

• Open the FileManagerFileManager
• Upload a picture from your desktop
• Try to apply an image transformation
• If a new folder appears with thumbs of different sizes, the installation is ok.