YouTube Dark Theme Firefox

YouTube Dark Theme

A highly customizable dark charcoal/blue theme for YouTube

Features & Capabilities

The YouTube Dark Theme Chrome extension offers users a seamless and highly customizable dark mode experience for YouTube. Built on top of YouTube's native dark theme, this lightweight extension enhances visual comfort by applying a dark charcoal and blue color scheme without the performance overhead associated with traditional theme injectors like Stylish or Stylus. Users can effortlessly toggle between light and dark modes using the action button, schedule theme activation during specified periods, and tailor the default colors to their preferences. Additionally, custom CSS injection allows advanced users to modify font sizes and styles for a personalized browsing experience. Unlike other dark theme extensions, it modifies YouTube's global cookies and CSS variables to efficiently implement changes, ensuring smooth performance and compatibility. Importantly, this extension respects user privacy by not transmitting any data to servers.

User Growth & Download Statistics

Manifest V2 Add-on Design
By:
Joe Ertaba
Daily users:
1,471 -16
Rating:
4.23
(92)
Version:
0.4.1 Last updated: 2022-12-26
Version code:
5504344
Creation date:
2017-02-13
Risk:
Moderate risk impact Low risk likelihood
Permissions:
Content scripts matches:
  • *.youtube.com
Size:
92.26KB
URLs:
Website
Full description:
See detailed description
Source:
Firefox Add-ons Store
Data ingested on:
2026-06-20
Compare stats and ranking:

Other platforms

Chrome
YouTube Dark Theme (v0.4.1)
60,000 4.22 (225)

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:
Joe Ertaba
Firefox Add-ons Store
https://addons.mozilla.org/firefox/addon/dark-theme-for-youtube/
Website:
https://add0n.com/dark-theme.html?from=youtube

User Reviews

Users appreciate the add-on's effective YouTube dark theme with good customization options and its ability to convert mobile YouTube to dark mode. However, multiple reviews highlight issues including instability when using Firefox containers, failure to work in private browsing, continuous refresh loops on YouTube Music, and a non-functional toggle button. Additionally, the configuration page not being dark frustrates some users. Despite these bugs, it remains favored over other similar extensions by some.
Pros
  • Provides a dark theme for YouTube and other related sites, helping reduce eye strain.
  • Highly customizable compared to other similar add-ons.
  • Effectively converts YouTube mobile to dark mode.
  • Some users find it better than other dark mode extensions.
Cons
  • Unreliable when used with Firefox containers, often disables the dark theme automatically requiring reactivation.
  • Does not work in private browsing mode.
  • Causes YouTube or YouTube Music to refresh continuously, making the sites unusable.
  • Extension button toggle does not function correctly or reflect the actual state.
  • Configuration page itself is not dark, which is inconsistent and bothers some users.
Recent reviews
O tema realmente funciona e o YouTube não fica branco estourando meus olhos, só acho que poderia ser totalmente preto a cor e o símbolo do YouTube branco, ficaria mais maneirinho
by Lu*****, 2026-04-08

by RA*****, 2025-06-17

by 远离*****, 2025-03-24
View all user reviews ›

Is YouTube Dark Theme 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 Dark Theme requires a few sensitive permissions. Exercise caution before installing.

Risk impact analysis details
  • Critical Request access to the following domains: youtube.com
  • 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 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 Dark Theme 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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Best YouTube Dark Theme Alternatives

Here are some Firefox add-ons that are similar to YouTube Dark Theme: