Auto Fullscreen

Open all Firefox windows in full screen mode

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Auto Fullscreen is a simple Firefox extension designed to automatically open all browser windows in fullscreen mode, including those opened after the initial launch. Unlike the original Auto Fullscreen add-on which only makes the initial window fullscreen, this fork ensures every window, even those created when opening tabs in separate windows, adopts fullscreen. This is perfect for users who prefer an immersive browsing experience across multiple windows. Additionally, users seeking to view bookmarks in fullscreen mode can follow provided guidelines (handling at your own risk). For bug reports or feature requests, contributions can be made via its GitHub issues page.

Add-on

By:: insiderser
Daily users:: 3,695 52
Rating:: 4.65

(20)
Version:: 2.0.4 Last updated: 2021-10-14
Version code:: 5309331
Creation date:: 2019-10-06
Risk:: Very low risk impact Low risk likelihood
Size:: 16.13KB
URLs:: Privacy policy
Full description:: See detailed description
Source:: Firefox Browser Add-ons
Updated:: a day ago

Ranking

# 1,383 ▲ 20

Other rankings

#213 in Appearance ▲ 6

#4 in fullhd keyword 13 ▼ 1

#11 in screen time keyword 15 ▲ 1

#12 in screen keyword 93 ▲ 1

#14 in auto keyword 60 ▲ 1

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User reviews

Users appreciate Auto Fullscreen for its lightweight, straightforward functionality that reliably enables fullscreen mode across platforms. It complements Firefox settings well and compensates for missing native features. However, common concerns include the inability to restrict fullscreen activation to certain sites, issues with bookmarks toolbar functionality, and the absence of an option to show the Windows taskbar on mouse hover in fullscreen mode.

Pros

Effectively enables automatic fullscreen mode as intended.
Lightweight and simple extension, easy to use.
Works well on multiple operating systems, including Linux and Windows.
Improves user experience when combined with certain Firefox settings like full-screen-api.ignore-widgets.
Addresses missing fullscreen features not natively available in Firefox.

Cons

Unable to limit fullscreen functionality to specific sites or domains.
Incompatibility with bookmarks toolbar, which does not function properly when extension is active.
Lacks feature to display the Windows taskbar on hover during fullscreen mode.

Recent reviews

THANK YOU!

by an*****, 2025-05-17

by 远离*****, 2025-03-27

by 远离*****, 2025-02-13

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Extension safety

Risk impact

Risk impact measures the level of extra permissions an extension has access to. A low risk impact extension cannot do much harms, whereas a high risk impact extension can do a lot of damage like stealing your password, bypassing your security settings, and accessing your personal data. High risk impact extensions are not necessarily malicious. However, if they do turn malicious, they can be very harmful.

Auto Fullscreen does not require any sensitive permissions.

Risk impact analysis details

Low This permission has no access or impact on the user's system or data, thus carrying no risk.

Risk likelihood

Risk likelihood measures the probability that a Firefox add-on may turn malicious. This is determined by the publisher and the Firefox add-on reputation on Firefox Browser Add-ons, the amount of time the Firefox add-on has been around, and other signals about the Firefox add-on. Our algorithms are not perfect, and are subject to change as we discover new ways to detect malicious extensions. We recommend that you always exercise caution when installing a Firefox add-on.

Auto Fullscreen has earned a fairly good reputation and likely can be trusted.

Risk likelihood analysis details

High This extension has low user count. Unpopular extensions may not be stable or safe.
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