Identify
A pure ruby image identification library.
Install
gem install identify
Supported Formats
BMP, PNG, JPG, GIF, XPM, PPM, PGM, PNM, PBM, XBM, TIFF
Example
require 'identify'
p Identify.image File.binread("test/images/test.png", 1024)
Output
{:width=>253, :height=>178, :format=>"png"}
Testing
Tests require a local installation of ImageMagick and identify to be in your $PATH
TODO
Channel type, Depth, Colorspace and Resolution.
See Also
http://rubygems.org/gems/imagesize