When you are watching a YouTube video in Mozilla Firefox, every time you switch to fullscreen mode, the browser shows the following message: YouTube.com is now fullscreen. Press Esc at any time to exit. If you are not happy to see this message, here is how to disable it.
To disable the message "YouTube.com is now fullscreen. Press Esc at any time to exit" in Firefox, you need to do the following:
- Run Firefox, open a new tab and enter the following text in the address bar:
Confirm that you will be careful if a warning message appears for you.
- Enter the following text in the filter box:
- You will see the parameter full-screen-api.approval-required. Set it to false.
That's it. To re-enable this message, set this parameter back to true. (via Techdows)
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