What's the easiest way to resize an image on Dreamhost? Which image software?

Hi,

What’s the easiest way to resize an image on Dreamhost? Which image software? (i.e. ideally one that is already installed on the DH servers).

For example, which of the image tool options mentioned in this article would DH RoR developers recommend? (I’m a unix novice note) - http://clarkware.com/cgi/blosxom/2007/02/24#FileUploadFu . Extract below:

  • ImageScience : A light inline-Ruby library that only resizes images. (Wraps the FreeImage library.)

  • RMagick : The grand-daddy,
    both in terms of advanced image processing features and memory usage. (Wraps the ImageMagick library.)

  • minimagick : It’s much easier on memory than RMagick because it runs the ImageMagick command in a shell.

Thanks