GifsOnTumblr is a Firefox extension designed to improve the experience of using Tumblr by addressing the platform's conversion of GIFs to WebP format. This extension tweaks the Tumblr dashboard to ensure that GIFs are served directly instead of the less compatible WebP files. Users can enjoy a more seamless experience when navigating through GIF content on Tumblr, which is particularly beneficial for those who appreciate glitch art and animated visuals.

It's important to note that while this extension effectively restores GIF functionality, users may experience slower page load times on dashboards with numerous GIFs. This performance issue is inherent to the way GIFs operate, and users should be prepared for potential delays when viewing content-heavy pages. GifsOnTumblr is a valuable tool for those looking to enhance their social networking experience on Tumblr.