windowed-fullscreen-video

Name: windowed-fullscreen-video
Rating: 4.3939 (33 reviews)
Author: Cubimon

make video fullscreen in window

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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.

Add-on

By:

Cubimon

Daily users:

1,430 -1

Rating:

4.39

(33)

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 Browser Add-ons

Data ingested on:

2025-07-14

Ranking

# 2,534 ▼ 7

Other rankings

#25 in fullhd keyword 14 ▼ 1

#35 in windows keyword 49

#40 in screensaver keyword 10 ▼ 1

#44 in screen time keyword 15 ▼ 1

#46 in ctrl+m (windows) keyword 36

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User reviews

windowed-fullscreen-video is a Firefox add-on that enlarges videos to fill the browser window without entering true fullscreen, working reliably on sites like YouTube and ESPN+. Users appreciate its simplicity and safety. However, it struggles with detection or playback on some sites, sometimes replacing native player and causing bugs like pausing or cropping videos. It also lacks features for choosing among multiple videos or better hotkey support, leading to occasional usability issues.

Pros

Effectively enables fullscreen video playback within the browser window without true fullscreen mode.
Works well on popular platforms like YouTube and ESPN+.
Simple and straightforward functionality that 'just works' in many cases.
Helpful for users wanting to expand video size without switching to exclusive fullscreen mode.
Safe and trustworthy based on source code review.

Cons

Sometimes fails to detect or work with videos on certain websites, especially embedded videos or niche sites.
Buggy behavior on some platforms like Twitter where video pauses or is cropped.
Replaces website's native video player with a generic Firefox player, occasionally inferior.
Lacks options to select among multiple videos on a page or integrated right-click menu for easier selection.
Requires manual focusing on the video player for hotkeys to function properly.

Recent reviews

Works nicely! I wish there was an option to select the correct video in case there are multiple videos on the site. Maybe adding to the right click menu of the videos would be possible?

by Ya*****, 2025-06-18

by 天灭*****, 2025-04-02

by 退出*****, 2025-02-12

View all user reviews ›

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.

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 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.

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.
Low **** ********* *** ******* **** **** * ****** **** ***** ******** *** **** ****** ** ** ****** *** *****
Low **** ********* *** ***** **** **** * ****** **** ***** ********** *** **** ****** ** ** ****** *** *****
Good **** ********* *** **** **** *******

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