FastImage Resize is an extremely light solution for resizing images in ruby by using libgd
Examples
require 'fastimage_resize'
FastImage.resize("http://stephensykes.com/images/ss.com_x.gif", "my.gif", 100, 20)
=> 1
Requirements
RubyInline
sudo gem install RubyInline
FastImage
sudo gem install sdsykes-fastimage -s http://gems.github.com
Libgd
See www.libgd.org/ Libgd is commonly available on most unix platforms, including OSX.