Probably the most uncomplicated image viewer out thereīut, how about something even simpler than the standard Windows 10 image viewer? If you're into clean, lean, minimalists designs when it comes to image viewers, then you might want to check out LeafView. However, if you're looking for something with a bit more features, there are plenty of extremely good image viewers out there. The default image viewer (Photos) of Windows 10 is pretty decent both in terms of features and looks, and it caters to most users' needs.