Imagemagick is a set of programs to manipulate various image formats (JPEG, TIFF, PhotoCD, PBM, XPM, etc...). All manipulations can be achieved through shell commands as well as through an X11 graphical interface (display).

Possible effects: colormap manipulation, channel operations, thumbnail creation, image annotation, limited drawing, image distortion, etc...

convert

convert between image formats as well as resize an image, blur, crop, despeckle, dither, draw
on, flip, join, re-sample, and much more.

identify

describes the format and characteristics of one or more image files.

mogrify

resize an image, blur, crop, despeckle, dither, draw on, flip, join, re-sample, and much
more. Mogrify overwrites the original image file, whereas, convert writes to a different
image file.

composite

overlaps one image over another.

montage

create a composite image by combining several separate images. The images are tiled on the
composite image optionall adorned with a border, frame, image name, and more.

compare

mathematically and visually annotate the difference between an image and its reconstruction..

display

displays an image or image sequence on any X server.

animate

animates an image sequence on any X server.

import saves any visible window on an X server and outputs it as an image file. You can capture a
single window, the entire screen, or any rectangular portion of the screen.

conjure

interprets and executes scripts written in the Magick Scripting Language (MSL).

For more information about the ImageMagick, point your browser to
http://www.imagemagick.org/.