This extension is a port of the Chrome extension with the same name. It is basically identical to the Chrome version. The changes were minimal and you can view the addon's code using Extension Source viewer. The project's source code can be found at https://github.com/artisticfox8/yt-anti-translate The original project can be found at https://github.com/zpix1/yt-anti-translate and https://chrome.google.com/webstore/detail/youtube-anti-translate/ndpmhjnlfkgfalaieeneneenijondgag