Often used this feature in Cent browser for a long time looking for it in Firefox. Thank you very much.

Very useful and resolved my big pain on macOS, the video player's default fullscreen always results to a system new full space, which is very annoying and hard to control/switch other app/tabs.

Thank you for the add-on. This browser tab/window-level full screen is what I wanted and searched for a long time.

Excellent work. If possible please add also hiding the tabs and address bar.

Works great, exactly what I needed, thanks for creating!