IrfanView is a very fast, small, compact and innovative FREEWARE (for
non-commercial use) graphic viewer for Windows
9x/ME/NT/2000/XP/2003/Vista.

It is trying to be simple for beginners and powerful for
professionals.

IrfanView is trying to create new and/or interesting features in its
own way, unlike some other graphic viewers, which whole "creativity"
is based on feature cloning, stealing of ideas and whole dialogs from
ACDSee and/or IrfanView! (for example: XnView is stealing/cloning
features and whole dialogs from IrfanView, since 5+ years).

IrfanView was the first Windows graphic viewer WORLDWIDE with
Multiple (animated) GIF support.
One of the first graphic viewers WORLDWIDE with Multipage TIF
support.
The first graphic viewer WORLDWIDE with Multiple ICO support.

Some IrfanView features:
Many supported file formats (click here the list of formats)
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
Fast directory view (moving through directory)
Batch conversion (with image processing)
Multipage TIF editing