rfanView is a very fast, small, compact and innovative graphic viewer for Windows. It is trying to be simple for beginners and powerful for professionals. IrfanView is a fast, simple freeware image viewer and editor that supports all major graphic formats, including BMP, DIB, JPEG, GIF, animated GIF, PNG, PCX, multipage TIFF, TGA, and more. In addition, it features drag-and-drop support, directory viewing, TWAIN support, slide shows, batch conversion, and modifications such as color depth, crop, blur, and sharpen. IrfanView is trying to create new and/or interesting features in its own way, unlike some other graphic viewers, whose whole “creativity†is based on feature cloning, stealing of ideas and whole dialogs from ACDSee and/or IrfanView!.

Some Features:
32 and 64 bit version
Many supported file formats (
http://www.irfanview.com/main_formats.htm
)
Multi language support
Thumbnail/preview option
Slideshow (save slideshow as EXE/SCR or burn it to CD)
Show EXIF/IPTC/Comment text in Slideshow/Fullscreen etc.
Support for Adobe Photoshop Filters
Drag and drop support
Fast directory view (moving through directory)
Batch conversion (with image processing)
Email option
Multimedia player
Print option
Change color depth
Scan (batch scan) support
Cut/crop
IPTC editing
Effects (Sharpen, Blur, Adobe 8BF, Filter Factory, Filters Unlimited, etc.)
Capturing
Extract icons from EXE/DLL/ICLs
Lossless JPG rotation
Many hotkeys
Many command line options
Many PlugIns
Only one EXE-File, no DLLs, no Shareware messages like “I Agree†or “Evaluation expiredâ€
No registry changes without user action/permission!
and much more