- Firefox add-on that changes the scrubber and progress bar on Youtube.com videos to a gif of Nyan Cat followed by a rainbow streak.
- This add-on works by changing the CSS on YouTube video pages and replacing the scrubber with a base64 representation of a Nyan Cat gif.
- Open FireFox and go to this page: https://addons.mozilla.org/en-US/firefox/addon/nyan-cat-youtube-enhancement/
- Download this repository to you local computer
- Open Firefox and go to the about:debugging page
- Press the "This FireFox" button
- Click "Load Temporary Add-on" button
- Click on any file in the folder "nyan_yt_enhancer" such as "manifest.json" Source: https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions/Your_first_WebExtension#installing