Small, Simple but High Performance Image Viewer

IrfanView is a free, small, and fast image viewer that can handle virtually any image file format (some require additional plugins). It offers an arsenal of image manipulation features (crop, resize, color adjustment, etc.), as well as a multitude of special features usually found only in expensive packages. There are too many to list here, but some of the best features include complete effects (sharpen, blur, etc.), paint capabilities (draw on images), desktop/window capturing, thumbnail viewer/creator, multimedia player, batch conversion (optional image processing), support for Adobe Photoshop filters, and many plugins available to add even more features.
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