How to Turn Off Firefox’s Fullscreen Warning Message – Guide
When a user launches the Fullscreen API, it is authorized to be activated. This can be done with a mouse click or with the keyboard. The API allows the website to provide a separate version of the website or a player that supports full screen mode. A phishing site can use this mode to instantly go full screen and present an interface that looks identical to the real site.
Firefox’s F11 feature and full screen mode are different things. This is a guide on how to use them.
Firefox warns you when you play a movie in full-screen mode or run something that takes up the entire screen. If you find it boring, we’ll show you how to disable the pop-up Firefox fullscreen warning in this post.
Disable fullscreen warning message in Firefox
We will need to access the Advanced Preferences Page, also popularly called the configuration page. These pages are generally not entertaining for everyone to use, and make changes carefully. If you change the wrong setting, you will have to reset the browser and you may lose all your profiles.
Configure the browser to show hidden files and folders. ..
The page that loads next will warn you about the risk of changing your main preferences. Click on the “Accept the risk and continue” button.
On the next screen, use the search bar to find full-screen-api.warning.timeout
When it shows up, click the pencil icon next to the setting to edit the value.
The setting accepts a value in milliseconds. You can set the value to Zero to disable it completely.
If you want to reduce the length of stay, you’ll have to experiment a bit to find out. I suggest keeping the time so that you can visualize for at least a second. It will help if you unfortunately land on a fake website.
If you go fullscreen on a video, you won’t see any warnings.
If you want to revert to the default value, you can do so by clicking the reset arrow on the top left corner of the screen.
Final note
If you’re using Firefox, you may be seeing a warning message that says “Fullscreen mode is enabled.” This warning is usually displayed when you open a new tab or when you try to use the Firefox menu bar to access the options for fullscreen mode. To turn off the fullscreen warning message in Firefox, follow these steps:
- Open Firefox and click on the three lines in the top left corner of the window. This will open a menu with options for different types of windows.
- In this menu, select “Options.”
- In the “Options” window, select “Fullscreen.”
- Click on the “X” in the top right corner to close the options window and return to normal Firefox behavior.
