- By:
- navi.jador
- Daily users:
- 3,621 -60
- Rating:
- 3.82 (66)
- Version:
- 4.11 Last updated: 2025-04-16
- Version code:
- 5931342
- Creation date:
- 2020-07-19
- Risk:
- Moderate risk impact Moderate risk likelihood
- Permissions:
- storage
- storage
- Size:
- 305.74KB
- Email:
- fu*****@gmail.com
- Full description:
- See detailed description
- Source:
- Firefox Browser Add-ons
- Updated:
- 14 hours ago
Ranking
Other platforms
Publisher Change History
2025-03-08: Email was changed from na*****@gmail.com to fu*****@gmail.com
Upgrade to see full email
User reviews
Pros
- Enhances YouTube viewing by allowing windowed fullscreen mode, improving video size on ultra-wide monitors and during live streaming.
- Previously free, with some users appreciating premium features and smoother performance after update.
- Allows users to maximize video window without disabling YouTube LiveChat Flusher add-on.
- Can revert to older free versions via version history to continue using free features.
Cons
- Recent update made the add-on subscription-based or paid, causing dissatisfaction among users who previously used free features.
- New versions lock previously free features behind a paywall, pushing users to downgrade to older versions.
- Increased permission requests, such as access to tab data, causing privacy concerns among users.
- Compatibility issues with the latest Firefox upgrade leading to video freezing, control loss, or black bars in theater mode.
- YouTube layout changes caused issues with chat replay positioning and video window maximization, leading some to downgrade versions.
Recent reviews
Un-hide 4.2 from the version history.
by Br*****, 2025-05-10
by Fi*****, 2025-05-09
by Ki*****, 2025-05-02
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.
YouTube Windowed FullScreen requires a few sensitive permissions. Exercise caution before installing.
Risk impact analysis details
- Critical Request access to the following domains: {{requestedDomains}}
- 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 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.
YouTube Windowed FullScreen is probably trust-worthy. Prefer other publishers if available. Exercise caution when installing this add-on.
Risk likelihood analysis details
- High This extension has low user count. Unpopular extensions may not be stable or safe.
- Medium **** ********* *** ******* ** *** **** * ******* *** ******* *** *** ** ****** ** *****
- Low **** ********* *** ***** **** **** * ****** **** ***** ********** *** **** ****** ** ** ****** *** *****
- Good **** ********* *** **** **** *******
Upgrade to see full risk analysis details
Compare add-ons
- Compare YouTube Windowed FullScreen vs YouTube Full Windowed
- Compare YouTube Windowed FullScreen vs YouTube Window Fullscreen
- Compare YouTube Windowed FullScreen vs Youtube FTW
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Here are some Firefox add-ons that are similar to YouTube Windowed FullScreen:

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Flame Quests

YoutubeCinema
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YouTube Fullscreen Theater Mode
Gabriel Erbetta

Windowed - floating Youtube/every website
Michiel Dral

Windowed - (No Windowed button)
drg
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