First Impression is described as 'Free and minimal image viewer with a focus on maximizing the space used for viewing your images by doing away with command bars and buttons. First Impression is controlled entirely by keyboard shortcuts and a small menu accessed by right clicking on the' and is a Image Viewer in the photos & graphics category. There are more than 50 alternatives to First Impression for a variety of platforms, including Windows, Mac, Linux, Flathub and PortableApps.com apps. The best First Impression alternative is IrfanView. It's not free, so if you're looking for a free alternative, you could try IrfanView or XnView MP. Other great apps like First Impression are XnView Classic, qView, Photoscape and Gwenview.