This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

Èròjà atẹ̀lélànà yii ni a ti fi pamọ́ fọ́jọ́ pípẹ́. Jọ̀wọ́ béèrè ìbéèrè titun bí o bá nílò ìrànwọ́.

How do I remove the massive OSD on fullscreen?

  • 2 àwọn èsì
  • 9 ní àwọn ìṣòro yìí
  • 7 views
  • Èsì tí ó kẹ́hìn lọ́wọ́ kulmegil

more options

For example, after clicking fullscreen on a YouTube video, a large, unsubtle OSD with the following text appears:

youtube.com is now fullscreen. Press ESC at any time to exit fullscreen.

This is okay the first time a site goes fullscreen because Firefox needs to ask for permission for it to stay fullscreen. But such a HUGE OSD is not acceptable after permission has been granted.

I wouldn't be so bothered by a very subtle OSD, but really I want to remove it completely. I'm guessing that the answer to this question involves changing a key in about:config.

For example, after clicking fullscreen on a YouTube video, a large, unsubtle OSD with the following text appears: youtube.com is now fullscreen. Press ESC at any time to exit fullscreen. This is okay the first time a site goes fullscreen because Firefox needs to ask for permission for it to stay fullscreen. But such a HUGE OSD is not acceptable after permission has been granted. I wouldn't be so bothered by a very subtle OSD, but really I want to remove it completely. I'm guessing that the answer to this question involves changing a key in about:config.

All Replies (2)

more options

Does updating from getfirefox.com work?

more options

Before You go I warn You that this has been there for a security reason (e.g. malicious site can try to "spoof" fake interface outside Fx window and such).

You can toggle preference "full-screen-api.approval-required" to "false". (type about:config in urlbar).

This equals "allow by default and don't bother me" global option ;) It disables all "entering fullscreen" notifications, including first ones with "allow" / "deny" buttons.

In case You already denied a site (and checked remember) it will take effect and You won't even know if site (flash / video tag) tried to enter fullscreen. You can check/change site permissions trough "view page info > permissions" tab.

Ti ṣàtúnṣe nípa kulmegil