Monday, February 29, 2016

How to disable the new "Website is now in fullscreen" message in Firefox



To stop  the new "Website is now in fullscreen" message in Firefox, do the following:

1. Open to about:config in your Firefox
2. Search for full-screen-api.warning.timeout
3. Modify value from 3000 to 0 (zero)

EDIT: Beware that this feature has been put in place to protect you from phishing attacks that mimic Firefox's menu and UI as /u/Syl0x points out 

You can also try using "Disable HTML5 Fullscreen Alert" Firefox Addon found here.


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