In an earlier post, I had reviewed Gimp - a robust image manipulation software which is installed by default in most Linux distributions. Gimp can no doubt be held at par with the industry leader Adobe Photoshop atleast in creating images for the web. But sometimes a situation arises where it is not feasible to use a GUI based software to modify images; perhaps because the machine does not have a running X server or you need a tool which allows you to do batch conversions of 100s of images to the required size.

Fortunately, there is a very powerful suite in Imagemagick. I call it a suite because it is actually a collection of tools (11 to be exact), each of which accomplishes a particular task. These tools are as follows:

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