# YouTube Tab-Fullscreen

> Twitch-style tab-fullscreen experience on YouTube

Canonical page: [https://chrome-stats.com/d/youtube-tab-fullscreen](https://chrome-stats.com/d/youtube-tab-fullscreen)

## Overview

- **ID:** `youtube-tab-fullscreen`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** xander1421
- **Category:** appearance
- **Daily users:** 18
- **Weekly downloads:** 4
- **Rating:** 5.00 / 5 (2 ratings)
- **Version:** 1.2.2
- **Last updated:** 2026-07-25
- **First published:** 2026-01-15
- **Size:** 17 KB
- **Data as of:** 2026-09-07
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/youtube-tab-fullscreen/)

## Description

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
<ul><li>Expand videos beyond standard theater mode to fill your tab</li><li>Press Alt+T or click the toolbar button to toggle</li><li>Remembers your preference as you browse videos</li><li>Matches YouTube's native design</li><li>Lightweight (under 50KB)</li></ul>
How to Use
<ol><li>Install the extension</li><li>Go to any YouTube video</li><li>Click the button in video controls or press Alt+T</li></ol>
Privacy
<ul><li>No data collection or tracking</li><li>No external connections</li><li>Only requires activeTab permission</li></ul>
Compatibility
<ul><li>Works on all YouTube video pages</li><li>Supports Firefox and others like Zen browser</li><li>Compatible with YouTube Premium and other extensions</li></ul>

## Rankings

- #25,616 — Overall
- #217 — screen time
- #248 — screensaver

## Permissions and access

### Permissions

- `activeTab`

### Content script matches

- `www.youtube.com`

## Safety

- **Risk impact:** Moderate risk impact
- **Risk likelihood:** Moderate risk likelihood

### Analysis details

- Request access to the following domains: youtube.com
- This extension has low user count. Unpopular extensions may not be stable or safe.

> Some risk analysis details are omitted from this free response. [Upgrade to view the full analysis](https://chrome-stats.com/pricing).

## Similar extensions and apps

- [Fullscreen Tab Video](https://chrome-stats.com/d/fullscreen-tab-video) — 58 users, 4.75 / 5
- [Youtube FTW](https://chrome-stats.com/d/youtube-ftw) — 4 users, 4.63 / 5
- [Full Tab Video Viewer](https://chrome-stats.com/d/full-tab-video-viewer) — 3 users
- [YouTube Theatre Mode](https://chrome-stats.com/d/youtube-theatre-mode) — 41 users, 5.00 / 5
- [YouTube Fullscreen Theater Mode](https://chrome-stats.com/d/yt-fullscreen-theater-mode) — 67 users, 5.00 / 5
- [Window Fullscreen for YouTube](https://chrome-stats.com/d/window-fullscreen-for-youtube) — 66 users, 5.00 / 5
- [FullTube](https://chrome-stats.com/d/fulltube) — 1 users
- [Full Screen for Firefox](https://chrome-stats.com/d/full-screen-for-firefox) — 5,325 users, 4.41 / 5
- [YouTube Windowed FullScreen](https://chrome-stats.com/d/youtube-window-fullscreen) — 4,184 users, 3.63 / 5
- [YouTube Dynamic Web Fullscreen](https://chrome-stats.com/d/youtube-dynamic-web-fullscreen) — 10 users
- [YouTube Browser Fullscreen](https://chrome-stats.com/d/browser-fullscreen) — 1 users
- [YouTube Window Fullscreen](https://chrome-stats.com/d/yt-window-fullscreen) — 11 users, 5.00 / 5

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Source: [Chrome-Stats](https://chrome-stats.com/d/youtube-tab-fullscreen)