YouTube Tab-Fullscreen

Name: YouTube Tab-Fullscreen
Rating: 5 (2 reviews)
Author: xander1421

By: xander1421 Add-on

Twitch-style tab-fullscreen experience on YouTube

Overview

Firefox Add-ons Store

Daily users

12 ▲ 1

Data as of 2026-07-26

Rating:

5.00

(2)

Version:

1.2.2

Last updated: 2026-07-25

Features & Capabilities

YouTube Tab-Fullscreen

Expand YouTube videos to fill your entire browser tab, similar to Twitch's theater mode.

What It Does

This extension adds a tab-fullscreen mode to YouTube. Unlike regular fullscreen, the video stays within your browser tab so you can still see other tabs and use browser shortcuts.

Features

Expand videos beyond standard theater mode to fill your tab
Press Alt+T or click the toolbar button to toggle
Remembers your preference as you browse videos
Matches YouTube's native design
Lightweight (under 50KB)

How to Use

Install the extension
Go to any YouTube video
Click the button in video controls or press Alt+T

Privacy

No data collection or tracking
No external connections
Only requires activeTab permission

Compatibility

Works on all YouTube video pages
Supports Firefox and others like Zen browser
Compatible with YouTube Premium and other extensions

User Growth & Download Statistics

Add-on

By:

Daily users:

Rating:

Version:

1.2.2 Last updated: 2026-07-25

Version code:

6374079

Creation date:

2026-01-15

Risk:

Permissions:

activeTab

Content scripts matches:

www.youtube.com

Size:

17.05KB

Full description:

Source:

Firefox Add-ons Store

Data ingested on:

2026-07-26

Compare stats and ranking:

Ranking

# 29,439 ▲ 1,065

Other rankings

#242 in screen time keyword 16 ▲ 7

For Developers

Monetize with App Pass Boost with Extension Booster

Contact the developer

Chrome-Stats does not own this Firefox add-on. Please use these information below to contact the Firefox add-on developer.

Developed by:

xander1421

Firefox Add-ons Store

https://addons.mozilla.org/firefox/addon/youtube-tab-fullscreen/

User Reviews

I love this addon i find it useful as it makes browsing less labour intensive. there are a few niggling issues, such as there being two fullscreen buttons when video is playing. this leads to an issue when you press the wrong button in the wrong order and cannot exit fullscreen. another issue i had is i often have to hit f11 every few minutes when an advert plays to enter fullscreen and this requires the keyboard. i can exit fullscreen no problem by hitting the maximize button in top right, but if the addon could make one of the fullscreen buttons in the video map to f11, then i wouldn't need to use the keyboard when swapping monitors or tabs.

by Fi*****, 2026-06-08

View all user reviews ›

Is YouTube Tab-Fullscreen Safe?

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.

YouTube Tab-Fullscreen requires a few sensitive permissions. Exercise caution before installing.

Risk impact analysis details

Critical Request access to the following domains: youtube.com
High ******* ******* **** *** ****** ***** *** ***** ** ******* **** ********* ********* ** * *********** *****

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 Add-ons Store, 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.

YouTube Tab-Fullscreen is probably trust-worthy. Prefer other publishers if available. Exercise caution when installing this add-on.

Risk likelihood analysis details

High This extension was recently updated in the past month. New updates may not be stable or safe.
High **** ********* *** *** **** ****** ********* ********** *** *** ** ****** ** *****
Low **** ********* *** ***** **** **** * ****** **** ***** ********** *** **** ****** ** ** ****** *** *****
Good **** ********* *** **** **** *******