Youtube Center Firefox [exclusive] May 2026

Before YouTube had a "Dark Mode," before "SponsorBlock," and before "Return YouTube Dislike," there was YouTube Center. This single add-on transformed the clunky, slow, and ad-ridden YouTube of the past into a lean, customized machine.

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Unlike modern extensions that focus on one specific problem, YouTube Center was a Swiss Army knife. It injected a massive "Configuration" menu directly into YouTube’s interface, allowing you to tweak almost every aspect of the site. Even by today’s standards, YouTube Center was ahead of its time. Here are the features that made Firefox users obsess over it: Before YouTube had a "Dark Mode," before "SponsorBlock,"

You can find archived versions of the UserScript (for Tampermonkey/Greasemonkey), but they are broken. You will get console errors, missing buttons, and videos that fail to load. Subscribe to our Firefox newsletter for more retro

But what happened to it? Can you still use YouTube Center on Firefox today? Let’s take a deep dive. YouTube Center was an open-source user script (and later a Firefox add-on) created by developer YePpHa . Its mission was simple: Give users every possible setting YouTube refused to provide.

Many scammers repackage old, vulnerable code to steal browser data. The Modern Successors (What to Use Instead) Good news: The spirit of YouTube Center lives on. Today, you can combine 2-3 modern Firefox extensions to get better functionality than YouTube Center ever provided.