Create Thumbnails From High Res Images: jQuery NailThumb
jQuery NailThumb is a handy jQuery plugin helps you convert any image to any thumbnail with full control.
If you want to add avatars to your application it’s easier to use this plugin to let them fit any size you need then to develop a functionality that help your user to upload avatars of the right size/sizes.
It creates thumbnails easily from high-res images, without any distortion, with one line of code. You can even decide thumbnail dimensions directly from CSS.
This plugin integrates perfectly with any media gallery, even more useful in dynamic web application when you can face any shape or size.