IrfanView is a fast and simple image viewer and editor that supports all major graphic formats, including BMP, DIB, JPEG, GIF, animated GIF, PNG, PCX, multipage TIFF, and TGA. 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.

Version 3.98 features a host of updates, including new thumbnail window option: Load thumbs from all subfolders; alpha blending effect added for slideshow/fullscreen; support for HDR and 3GP formats.