Imagus is a browser extension for Firefox that allows users to enlarge images and display images/videos from links with a simple mouse-over. It is similar to the Hover Zoom extension, which is a popular tool for browsing memes and gifs on desktop. However, Hover Zoom has been flagged as spyware, so users may want to consider using Imagus instead. Imagus works with a wider range of links than Hover Zoom, including those from imgur. The extension also has customizable settings, including an expandable set of rules for getting larger images, media, or other content.