CRX id
fkjbbblglhfokmilicmlbgoijjlikdep
fkjbbblglhfokmilicmlbgoijjlikdep
Description from extension meta
Enables fullscreen mode for youtube videos embedded in the twitter feed
Image from store
Description from store
If you want to make sure this extension is not malicious you can check the (very short) source code at https://github.com/BaliBalo/twitterYoutubeFullscreen and use it directly from there.