The developer should add that it needs full-screen-api.allow-trusted-requests-only to be set to "False". Anyway, thumbs up for making an addon that finally circumvents Mozilla's failing F11 handling

I love it! With THIS hint it works perfectly on my Mac: "type "about:config" in your Firefox address bar (like going to a website), click "accept the risk and continue". then search for "full-screen-api.allow-trusted-requests-only" and change it to false."

don't work on mac

Brilliant! This works on Firefox when other options failed to hide the nav bar and tabs. 1st Tap the window so the top bar isn't activated. Press Ctrl+Shift+F. Easy! Using a keyboard shortcut doesn't add an icon to a crowded address/search bar. Press Esc to return. Now I can view online tutorials that show videos on their webpage without the distracting top bars. The window gets bigger, so it's easier to see details. Thank you Trishul~!!!

Works with an annoying popup for 5 seconds, please delete it.

It's really frustrating that an extension like this is the answer to a basic problem that firefox should solve by default. As others have said, it works, but the toolbar doesn't show up when you move your mouse to the top of the screen, and half the time the keyboard shortcut itself doesn't seem to work for unknown reasons. Giving 2 stars because it is useful in a pinch, but jeez.

works as advertised! some advise for the (mac) users that don't get it to work tho: type "about:config" in your firefox adress bar (like going to a website), click "accept the risk and continue". then search for "full-screen-api.allow-trusted-requests-only" and change it to false. your firefox browser now stops blocking fullscreen plus.

I need to have the window active (i.e. click on the webpage) for it to work. But works as advertised so I am satisified.

To get this working on FF Developer Edition v80 I also had to set `full-screen-api.allow-trusted-requests-only: false` in `about:config`

1 little annoyance:

I often have to execute the shortcut 3 times or so before it works... bug?

(macOS)

It does nothing with Control+Shift+F (tested on several website, including example.com)

basic but does the job

Wonderful!

This is the only fullscreen addon I've found that at least partially works. It will open your tab in fullscreen, but you have to press control-shift-f every single time, and once you are in fullscreen, you can't just logically mouse up to the top to show the bookmarks and tabs you've hidden, just nothing appears.

Awesome! Thought it didn't work at first because it doesn't work on mozzilla firefox pages and you might have to restart firefox. Thanks a lot

The add-on does what is says, but is kinda pointless as Firefox already goes complete fullscreen with F11. However only if browser.fullscreen.autohide (about:config) is set to true, which is the default setting anyways.