Trouts GIF Optimizer

Trouts GIF Optimizer shrinks GIFs and converts other graphics to optimized GIFs: Bitmaps (*.bmp), JPEGs (*.jpg; *jpeg), Icons (*.ico), Metafiles (*.wmf; *.emf). Just drag-and-drop files then Save.

Supports animated GIFs. Windows clipboard support.

You can also search for graphics optimize recursively through subfolders. Shows previews of optimized GIFs.