XnView is a utility for viewing and converting graphic files.
It has the features :
- Import about 360 graphic file formats
- Export about 40 graphic file formats
- Multipage TIFF, Animated GIF, Animated ICO support
- Resize
- Copy/Cut/Crop
- Adjust brigthness, contrast...
- Modify number of colors
- Apply filters (blur, average, emboss, ...)
- Apply effects (lens, wave, ...)
- Fullscreen mode
- Slide show
- Picture browser
- Batch convert
- Thumbnail create
- Screen capture
- Contact Sheet create
- Multi-page file create (TIFF, DCX, LDF)
- And many may other things...

WWW: http://www.xnview.com/