Hands down one of the best free Windows Image Graphic Viewers available. It is chock-a-block with useful features.

• Over 50 supported image formats.
• Thumbnail previews.
• Print support.
• Drag/drop/copy/crop/paste. Makes sizing and cropping screen shots a breeze.
• File conversion.
• Much much more.

One of my favorite features is easy file association. How many times have you installed an application to find that is has grabbed all of the graphic file associations. IrfanView has a simple check box dialog easily reclaim those kidnapped associations.

IrfanView English Version Website