YoutubeFullscreen

Tiny extension to force YouTube embeds to allow fullscreen. Works by setting allowfullscreen on the iframe and reloads it.

Install

Chrome, Edge, Brave & Other Chromium based browsers

NOTE FOR BRAVE: Since unsigned extensions cannot be added, you must extract the ZIP file and load it as "Unpacked". To install go to chrome://extensions, and enable developer mode. Download the CRX file from the releases, then drag it from your downloads to your browser. Click "add".

Firefox

Go to about:debugging#/runtime/this-firefox, click "Load temporary addon", select the ZIP file from the releases. You will need to enable permissions for the addon to work.