ImageCrush¶ ↑

Reduce the size of PNG and JPEG files using the pngcrush and jpegtran tools, as described at yuiblog.com/blog/2008/11/14/imageopt-3/

Usage¶ ↑

The tools pngcrush and jpegtran must be installed on your system.

Can be used with single files and with directories:

require 'image_crush'
ImageCrush('path/to/image.png')
ImageCrush('path/to/image.jpg')
ImageCrush('path/to/dir')

ImageCrush also comes with a handy rake task to be used with Ruby on Rails. To use it, add the following line to your Rakefile:

require 'image_crush'

Then, simply invoke the task with:

rake crush

This will automatically traverse your public/images directory and reduce the size of all PNG/JPEG files, including subdirectories.