Tumblr started (badly) converting GIFs to WebP on their dashboard, fucking up glitch art and making saving of GIFs even harder. This extension tweaks the dashboard to serve GIFs instead of WebP. Unfortunately your browser might download both. WARNING: pages with a lot of GIFs might be slow as a result. This is how GIFs are and I can't do anything about it. https://github.com/eramdam/GifsOnTumblr