YouTube Dynamic Web Fullscreen Firefox

YouTube Dynamic Web Fullscreen

Resize YouTube video to fill browser window while preserving aspect ratio.

Features & Capabilities

Maximize your viewing experience on YouTube with a single click.

YouTube Dynamic Web Fullscreen allows you to force the video player to fill the entire browser window without entering the traditional full-screen mode. This is perfect for multitasking with "picture-in-picture" style viewing or maximizing screen real estate on ultra-wide monitors.

Key Features:

  • True Window Fill: The video resizes to fit your browser window exactly (100% width and height).
  • Aspect Ratio Safe: Automatically adds black bars (letterboxing) so the video never stretches or distorts.
  • Distraction Free: Instantly hides the comments, sidebar, title, and top gradient for a clean, cinema-like view.
  • Smart "Always-On-Top": Uses advanced layering to ensure the video stays above all other YouTube elements.
  • Zero Data Collection: This extension runs locally and collects absolutely no user data.

How to use:

  1. Open any YouTube video.
  2. Click the extension icon.
  3. The video will expand to fill the window.
  4. Click again to return to normal view.

User Growth & Download Statistics

Manifest V3 Add-on
By:
DYNAMIC BLINK
Daily users:
7 1
Version:
1.6 Last updated: 2026-01-21
Version code:
6124925
Creation date:
2026-01-17
Risk:
Moderate risk impact Moderate risk likelihood
Permissions:
Host permissions:
  • *://*.youtube.com/*
Size:
9.53KB
Full description:
See detailed description
Source:
Firefox Add-ons Store
Data ingested on:
2026-07-14
Compare stats and ranking:

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:
DYNAMIC BLINK
Firefox Add-ons Store
https://addons.mozilla.org/firefox/addon/youtube-dynamic-web-fullscreen/

Is YouTube Dynamic Web 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 Dynamic Web Fullscreen requires a few sensitive permissions. Exercise caution before installing.

Risk impact analysis details
  • Critical Request access to the following domains: youtube.com
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 Dynamic Web 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 **** ********* *** ******* **** **** * ****** **** ***** ******** *** **** ****** ** ** ****** *** *****
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Best YouTube Dynamic Web Fullscreen Alternatives

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