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Youtube Theme Engine

mozilla.orgBrowser DevTools & extensions

PulseGate's liveness check found it on 20 Sep 2026; it is registered on Firefox Add-ons and has been in the index since 20 Sep 2026. How this is checked

Youtube Theme Engine is a Firefox extension that customizes YouTube and YouTube Music. It provides built-in and custom themes, palette editing, layout and typography controls, media adjustments, scheduled theme switching, and accessibility features.

Inferred · not functionally tested

FreeWebEmbeddableCloud-managed
Youtube Theme Engine preview
Visit mozilla.org
1alternative
12features
2026since

Overview

6 features

Purpose: Customizing YouTube and YouTube Music interfaces for better appearance, focus, readability, and accessibility.

Inferred · not functionally tested

Audience: YouTube and YouTube Music users who want interface customization

Inferred · not functionally tested

Functions: Unknown

Interfaces: API: unknown · MCP: unknown · CLI: unknown · Self-hosting: unknown

Recorded constraints: pricing: free · license: Proprietary · platforms: WEB · deployment: browser, embeddable, cloud_managed

Constraint provenance is unknown; confirm requirements with the publisher.

Record sources: addons.mozilla.org · addons.mozilla.org. These links do not verify the individual claims.

Youtube Theme Engine sits in PulseGate's Browser DevTools & extensions category. Inferred · not functionally tested: It focuses on customizing YouTube and YouTube Music interfaces for better appearance, focus, readability, and accessibility. Inferred · not functionally tested: It is built as a consumer product for youTube and YouTube Music users who want interface customization. Basis unknown · not verified: Youtube Theme Engine costs nothing to use. Basis unknown · not verified: Youtube Theme Engine is available on the web and embeddable surfaces.

BlueCookieWookie builds and maintains Youtube Theme Engine, and it first shipped in 2026. Inferred · not functionally tested: Key capabilities include dark themes, light themes, and high-contrast themes. The interface is available in 32 languages, including Czech, German, and Greek.

Summary written by a language model from the project’s public pages.

Tasks: Inferred · not functionally tested

  • Dark themes
  • Light themes
  • High-contrast themes
  • Custom palettes
  • Live color preview
  • Contrast checker

Topics: Inferred · not functionally tested

Tags
youtube-customizationfirefox-extensiontheme-editoraccessibility-tools

JSON profile · Text profile · Access guide

Built with & integrations

Runs on
BrowserEmbeddableCloud-managed

Trust & compliance

Public signals
HTTPSPrivacy PolicyTerms of ServiceFree tierMulti-languageStore listing found

Indexing history

1

What PulseGate has recorded for this listing

  1. Indexed20 Sep · 01:42 UTC
    Youtube Theme Engine seen via Firefox Add-ons
    Source: Firefox Add-ons · Open

Frequently asked questions about Youtube Theme Engine

What is Youtube Theme Engine?
Inferred · not functionally tested: Youtube Theme Engine focuses on customizing YouTube and YouTube Music interfaces for better appearance, focus, readability, and accessibility. It is catalogued under Browser DevTools & extensions on PulseGate.
Who should use Youtube Theme Engine?
Inferred · not functionally tested: Youtube Theme Engine is a consumer product built for youTube and YouTube Music users who want interface customization.
Is Youtube Theme Engine free?
Basis unknown · not verified: Yes — Youtube Theme Engine is free to use.
What platforms does Youtube Theme Engine run on?
Basis unknown · not verified: Youtube Theme Engine runs on the web and embeddable surfaces.
Is Youtube Theme Engine still active?
PulseGate's liveness check found it on 20 Sep 2026.
What projects are similar to Youtube Theme Engine?
Similar projects tracked by PulseGate include Youtube Theme, Super YouTube Theme Maker, and Youtube UI.Youtube ThemeSuper YouTube Theme MakerYoutube UI
Who develops Youtube Theme Engine?
Youtube Theme Engine is developed by BlueCookieWookie.
How long has Youtube Theme Engine been around?
Youtube Theme Engine first shipped in 2026.

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