IrfanView is a great freeware image viewer with all the important features and supports more than 60 data formats. IrfanView has grown into a tool that doesn't just support 60 image formats but also the most important audio and video files (WAV, AVI, MP3, OGG, MPG) and animated GIFs. You can also browse through collections of graphics or watch an automatic slideshow. There are also simple image editing tools, a graphic converter and a scanner interface. The software isn't just first class because it's free. Version 4.36 of IrfanView comes with numerous new features and bug fixes. Verdict: Together with the IrfanView plug-in collection, that's available separately, this freeware tool flawlessly masters all the important tasks of an image viewer. Thus it's hardly inferior to expensive solutions like ACDSee or ThumbsPlus. As an alternative you can use the freeware XnView. Attention: During the installation IrfanView wants to install the browser Google Chrome. If you don't want that, just untick the box.