Download Thumbnail Generator
You're welcome to the source of the
thumbnail generator. In fact, even though you're free to use
the version hosted by me, if you're getting heavy traffic or
need an absolute guarantee of reliability, we're both better
off if you just copy the source and run & host it on your
own site. Credit is always appreciated if you do.
The Thumbnail Generator is hosted in a git repository, and you can simply clone it from this URL:
http://rix0r.nl/projects/thumbs/.git
Installation
Copy config.php.dist to config.php, create a directory that's writable to the web server, and put its location in config.php. Make sure you have wget and ImageMagick. Done!
MooTools
Thumbnail Generator was written using MooTools, which is just an awesome JavaScript library.