ThumbsUp

ThumbsUp is a simple, drag-and-drop based utility to create thumbnails for a bunch of pictures and supports all image formats of Mac OS X and QuickTime (including PDF documents). In addition size, quality, sharpening and antialiasing are configurable. Images can be scaled by percentage or limited to a maximum size, and with a scaling of 100 percent it may as well be used as an ultra-fast, comfortable image converter. Note: This utility is not intended to be a HTML thumbnail gallery generator; there are already lots of them out there.