Usefull in some cases.
But, I would like a default mode in "fullscreen" without asking
( and, for some sites/domaines add a specific mod )
So, a "default option" should do five stars here.
Thanks for all

This add-on is great but it does not 're-tab' the window once you exit fullscreen mode. More importantly, it does not give the user the choice to use the normal behavior of the fullscreen button which might be preferred in certain occasions (e.g. for short videos where you don't necessarily need to spawn a new window). Adding an on-off toggle button to the add-ons bar, together with a keyboard shortcut to fire it, will improve this useful extension quite a lot!!! (3 Stars)

EDIT 31/07/2019: Extension has been modified to support some of the above changes and has new very useful features :) Re-tabbing a fullscreen window is still a bit buggy (tested so far with YouTube), otherwise very useful extension!

Allows you to make videos full screen just inside the browser window. Perfect.

It would be really nice to have a keybind or floating button to exit the fullscreen mode.

Works fine with You tube and the such content... but not for RAW

Very nice! Best solution for PIP with all Videos if your OS supports AlwaysOnTop Windows.
# FEATURE REQUEST
Could you add an alert that ask if I want to use fullscreen or windowed?
Otherwise I always have to toggle the extension on and off, and reload page.