uploadJuicer – Image Processing in the Clouds
http://www.uploadjuicer.com/

Resize / reprocess 1000s of images without overloading your poor beleagured web server
. Resizing, cropping, watermarks & more are available through their simple JSON interface. Juicer is designed to be used with any ruby or rails project. And if you’re not a rubyist, they have a simple REST API. This has been added to the tools section of Research Resources Subject Tracer™ Information Blog.