ImageMagick is a free open-source program for creating and manipulating images in more than 68 formats (including GIF, JPEG, TIFF, PhotoCD, PDF, and PNG). It runs on many popular operating systems including Linux, Unix, Windows, Macintosh, VMS, and OS2. You can manipulate image files directly from the command line, or access the different manipulation methods through your favorite Perl, C, C++, or Java development environment.
For more information about ImageMagick, view the official homepage:
ImageMagick on DreamHost
ImageMagick is preinstalled on DreamHost servers. You can access it via SSH in the following directory:
ImageMagick with MediaWiki's One-Click Install on DreamHost
The following links detail how to use ImageMagick with MediaWiki: