windowed-fullscreen-video

Name: windowed-fullscreen-video
Rating: 4.3333 (39 reviews)
Author: Cubimon

By: Cubimon

make video fullscreen in window

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Features & Capabilities

Windowed Fullscreen Video is a handy Chrome extension that lets you expand HTML5 videos to fullscreen size within your browser window without using an iframe. Perfect for platforms like YouTube and Twitch, simply click the extension icon while a video is playing to maximize it in the current window. To revert back, click the icon again or reload the page. This extension enhances your viewing experience by providing quick and easy fullscreen functionality directly on supported websites.

The extension supports all websites that use HTML5 video embedded directly in the DOM, making it a versatile tool for video lovers. Its source code is available on GitHub for those interested in exploring or contributing to the project.

User Growth & Download Statistics

Add-on

By:

Cubimon

Daily users:

1,515 -2

Rating:

4.33

(39)

Version:

1.5 Last updated: 2019-12-04

Version code:

4917679

Creation date:

2019-02-25

Risk:

Permissions:

activeTab

Size:

10.66KB

Email:

cu*****@gmail.com

URLs:

Website

Full description:

Source:

Firefox Add-ons Store

Data ingested on:

2026-06-19

Compare stats and ranking:

Ranking

# 2,598 ▼ 9

Other rankings

#38 in windows keyword 40

#41 in screensaver keyword 9

#46 in screen time keyword 17 ▲ 1

#67 in screen keyword 92 ▼ 2

#69 in pull keyword 3 ▲ 2

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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:

Cubimon

Firefox Add-ons Store

https://addons.mozilla.org/firefox/addon/windowed-fullscreen-video/

Email:

cu*****@gmail.com

Website:

https://github.com/cubimon/windowed-fullscreen-video

User Reviews

Users broadly praise this add-on for turning videos into a distraction-free, full-window theater view across YouTube and other sites, with generally reliable and easy operation. However, compatibility is not universal; some sites don’t detect or play videos, and a few experiences include cropping or layout issues. In some cases the plugin swaps in Firefox's video player, which can be suboptimal, and hotkeys may require focusing the player. Overall, it’s handy for a cleaner viewing experience but site-specific quirks can occur.

Pros

Delivers a distraction-free, full-window viewing experience by expanding the video to fill the browser window.
Works across multiple sites (YouTube, ESPN+, Twitter, Twitch) for a consistent theatre-like mode.
Generally reliable and easy to use; reviewers often say it "just works" or "works like a charm."
On YouTube, it avoids the site's own video chrome, giving consistent control.

Cons

Site compatibility is inconsistent; some sites fail to detect or play the video, or break embedded content.
On certain sites, the video display is cropped or uses screen real estate poorly unless in full window.
In some cases it replaces the site's video player with Firefox's generic player, which can feel inferior.
Keyboard hotkeys may not work unless you click the video to focus.

Recent reviews

As much as i appreciate this plugin as its basically the only way to fullscreen 16x9 content on an ultrawide without said content using up all of the screens realestate - there are frequent bugs with it whereby the volume slider resets itself to a previous state at seemingly random intervalls. its very frustrating and has caused damage to a pair of my headphones.

by Fi*****, 2026-05-08

Works great for making YouTube look distraction-free, especially in a compact browser (Zen). It doesn't use the custom YouTube player chrome, but that's excusable.

by Ve*****, 2026-03-28

by Fi*****, 2025-11-28

View all user reviews ›

Is windowed-fullscreen-video 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.

windowed-fullscreen-video does not require any sensitive permissions.

Risk impact analysis details

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.

windowed-fullscreen-video 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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