Q. How do I convert images from a shell prompt? For example convert an image in the JPEG format to PNG or vise versa?

A. You need to use the convert command which is a member of the ImageMagick suite of tools. Use it to convert between image formats as well as
=> Resize an image
=> Blur an image
=> Crop an image
=> Despeckle an image
=> Dither an image
=> Draw on an image
=> Flip an image
=> Join an image
=> Re-sample, and much more.

Read the rest of this entry