IrfanView is a very fast, small, compact and innovative FREEWARE (for non-commercial use) graphic viewer for Windows 9x/ME/NT/2000/XP.
It is trying to be simple for beginners and powerful for professionals.
IrfanView was the first Windows graphic viewer WORLDWIDE with Multiple (animated) GIF support.
One of the first graphic viewers WORLDWIDE with Multipage TIFF support.
The first graphic viewer WORLDWIDE with Multiple ICO support.