IrfanView is a fast, simple image viewer/editor/converter that supports all
major graphic formats, including BMP, DIB, JPEG, GIF, animated GIF, PNG, PCX,
multipage TIFF, TGA, and more. It is simple enough for a novice computer user
but has incredible functionality that will be useful to even a professional
photographer. 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. (in Graphics)