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RMagick is an interface between the Ruby programming language and the ImageMagick® and GraphicsMagick image processing libraries. RMagick can be more difficult to install than the typical Ruby extension. First you have to install ImageMagick or GraphicsMagick, and those libraries require a lot of other libraries. Nevertheless, the process can be made easier with a bit of planning. On this page I'll try to answer the most common questions about installing RMagick. Give it a quick scan before you start downloading files.