ThumbsUp is a simple, drag-and-drop based utility to create thumbnails or icons for a bunch of pictures or movies and supports all image and movie formats supported by Mac OS X and QuickTime (including PDF and PostScript documents).

Thumbnails are either scaled by percentage or limited to a maximal size and created as JPEG, JPEG 2000, TIFF, PNG, BMP or GIF files. In addition, it is possible to specify antialiasing, sharpening, and compression to optimize the results. Use ThumbsUp to convert PDF screenshots easily to other image formats using drag-and-drop and scaling to 100 percent.

Just drop a bunch of images, movies or folders onto the application icon in the Dock or the Finder. ThumbsUp afterwards creates thumbnails and/or icons for every file using the specified size and filename extensions. Note that the thumbnail images are created in the same folder as the original files and that dropping folders onto ThumbsUp also scans subfolders for images and movies.

Requirements:
OS X 10.5+
QuickTime 6+
Intel