What is GraphicsMagick?
GraphicsMagick is the swiss army knife of image processing. Comprised of 282K physical lines (according to David A. Wheelers SLOCCount) of source code in the base package (or 952K 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.
Comments and Reviews
Said about GraphicsMagick as an alternative
command line based and does many of the same functions as ImageMagick. The command line interface is easier to understand then ImageMagick and it is extremely fast.