oscThumb

oscThumb contribution uses the open source project phpThumb to create thumbnails of your images.
Instead of sending the full size image to the browser and let the browser resize it, which can seriously slow down the loading time of your pages and look ugly, oscThumb will generate thumbnails and save them in a cache folder on your server, for future use.
It used Imagemagic (if available) or GD library to generate gif, jpg and png thumbnails.
In my knowledge, this is the only thumbnailing contribution that can really protect your images agains thieves!

oscThumb

http://addons.oscommerce.com/info/5491

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