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YouTube Super Fast Chat

Ultimate Performance Boost for YouTube Live Chats

Versión del día 16/4/2025. Echa un vistazo a la versión más reciente.

Cómo instalar

Tendrás que instalar una extensión para tu navegador como Tampermonkey, Greasemonkey o Violentmonkey si quieres utilizar este script.

You will need to install an extension such as Tampermonkey to install this script.

Tendrás que instalar una extensión como Tampermonkey o Violentmonkey para instalar este script.

Necesitarás instalar una extensión como Tampermonkey o Userscripts para instalar este script.

Tendrás que instalar una extensión como Tampermonkey antes de poder instalar este script.

Necesitarás instalar una extensión para administrar scripts de usuario si quieres instalar este script.

(Ya tengo un administrador de scripts de usuario, déjame instalarlo)

Cómo instalar

Tendrás que instalar una extensión como Stylus antes de poder instalar este script.

Tendrás que instalar una extensión como Stylus antes de poder instalar este script.

Tendrás que instalar una extensión como Stylus antes de poder instalar este script.

Para poder instalar esto tendrás que instalar primero una extensión de estilos de usuario.

Para poder instalar esto tendrás que instalar primero una extensión de estilos de usuario.

Para poder instalar esto tendrás que instalar primero una extensión de estilos de usuario.

(Ya tengo un administrador de estilos de usuario, déjame instalarlo)

Autor
𝖢𝖸 𝖥𝗎𝗇𝗀
Calificaciones
0 0 0
Versión
0.100.5
Creado
1/7/2023
Actualizado
16/4/2025
Tamaño
525 KB
Compatibilidad
Compatible con Firefox Compatible con Chrome Compatible con Opera Compatible con Safari Compatible con Edge Compatible con Brave
Licencia
MIT
Funciona en

English｜日本語｜繁體中文

🧠 YouTube Super Fast Chat

🚀 Ultimate Performance Boost for YouTube Live Chats

📌 What Does This Userscript Do?

YouTube Super Fast Chat drastically improves the performance and responsiveness of YouTube's live chat interface (including live chat replay). By re-engineering how chat messages are processed, rendered, and displayed, it provides a much smoother experience, especially during high-volume streams or VOD replays.

✨ Highlights

  • Zero-lag chat rendering even during fast-paced streams.
  • Enhanced timestamp accuracy for live chat replays.
  • Memory leak prevention for long sessions.
  • Font pre-rendering to eliminate "pop-in" text.
  • Visual stability fixes for tooltips, author chips, and menus.

🧰 Key Features

  • 🧩 Advanced Chat Message Stamping – Significantly improves how quickly messages appear.
  • ⏱️ Accurate Replay Timing – Fixes replay chat timestamp desync issues.
  • 🧼 Memory Leak Patches – Resolves known memory leaks in YouTube’s own ticker and timer handlers.
  • 💬 Reduced Message Limit – Caps max rendered messages (default 90) for better performance.
  • 🖼️ Optimized Thumbnails – Smaller author/emoji images to lower memory and CPU usage.
  • 🧠 Smart Prefetching – DNS and resource preloading for smoother emoji/images loading.
  • 🛑 Fixes Chat UI Glitches – Includes layout fixes, border bugs, tooltip overflows, and misaligned buttons.
  • 🧱 Disables Inefficient Transforms – Removes YouTube’s unnecessary animations and will-change properties.
  • 📜 Refined Scroll Behavior – Ensures stable scrolling, proper anchor behavior, and fixes anchor jumping bugs.
  • 🎯 Ticker Animation Engine – Custom-built CSS and JS for ticker (Super Chat/Membership) rendering and progress bars.

❌ What It Doesn’t Do

  • 🚫 It does not alter chat moderation, censorship, or content.
  • 🚫 It does not inject ads or track your browsing.
  • 🚫 It does not bypass YouTube’s core limitations (e.g., hidden messages).
  • 🚫 It does not add new features like filters, popouts, or user tagging.

🌐 Where It Runs

Works on both live stream chat and chat replay pages.

🧪 Browser Compatibility

Browser Supported via
Chrome Tampermonkey / Violentmonkey ✅
Firefox Tampermonkey / Violentmonkey / FireMonkey ✅
Edge Tampermonkey / Violentmonkey ✅
Brave Tampermonkey / Violentmonkey ✅
Opera Tampermonkey / Violentmonkey ✅
Safari (Partial) ✅ (some visual features may vary)

⚠️ Not compatible with Waterfox Classic or outdated browsers that lack modern CSS/JS APIs (IntersectionObserver, CSS.supports, WebAssembly, etc.)

🔒 Security & Privacy

  • 🛡️ No external tracking.
  • 🔍 No analytics, data logging, or user fingerprinting.
  • 📁 Uses only public APIs and resources.
  • ✅ All injected logic stays within YouTube’s chat iframe scope.
  • 🔐 Safe and open-source under MIT license.

❤️ Tip

If you use BetterStreamChat or other enhancements, this script should remain compatible as long as those do not override the same rendering functions. For best results, run this as the first userscript (@run-at document-start) in the list.