How to Activate Full-Screen Mode in Firefox

Eliminate distractions while working with one simple tweak

If you want a more distraction-free experience while surfing the internet, Mozilla Firefox includes a handy full-screen mode. The Firefox user interface doesn't take up a significant amount of real estate, but there are still occasions where the browsing experience is better when viewing it full-screen. Activating it is a very simple process. We show you how below.

This article is only intended for users running the Mozilla Firefox web browser on Linux, Mac OS X, and Windows operating systems.

How to Activate Full-Screen Mode in Firefox

This tutorial walks you through it step-by-step on the Windows, Mac, and Linux platforms.

  1. Open your Firefox browser.

  2. To activate Full-Screen mode, select the Firefox menu, located in the upper right-hand corner of your browser window and represented by three horizontal lines.

    A screenshot of Firefox with the More menu highlighted
  3. When the pop-out menu appears, press the full-screen icon. It's a short line with two arrows pointing to opposite corners. You can see it highlighted in the image below.

    You can also utilize the following keyboard shortcuts in place of this menu item: Windows: F11; Linux: F11; Mac: COMMAND+SHIFT+F.

    The full-screen button in Firefox
  4. To exit Full-Screen mode at any time, use the full-screen icon or one of the keyboard shortcuts a second time.

    Firefox in fullscreen