Web CPU Tamer

透過隱性非同步排程延遲減少瀏覽器的能源影響

目前為 2025-04-05 提交的版本，檢視最新版本。

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作者: 𝖢𝖸 𝖥𝗎𝗇𝗀
評價: 0 0 0
版本: 2025.100.2
建立日期: 2025-04-05
更新日期: 2025-04-05
尺寸: 16.1 KB
授權條款: MIT
腳本執行於: 所有網站

🌿 Web CPU Tamer

Reduce your browser’s energy usage and CPU load by adding smart, invisible delays to script execution.

📌 What does this userscript do?

Web CPU Tamer introduces a lightweight, intelligent delay into the browser's task scheduling system. By doing so, it prevents web pages from overwhelming your CPU with tightly packed timers and animations — all without breaking any functionality.

This leads to:

Lower energy usage 🔋
Reduced fan noise 🌀
Smoother multitasking 🧠
A cooler and more efficient browsing experience 🌡️

💡 How does it work?

This script replaces the browser’s built-in scheduling functions with optimized versions:

Original	What it does
`setTimeout` / `setInterval`	Adds two micro-delays before each execution using `queueMicrotask` and `MutationObserver`. This lets the browser handle layout and paint cycles more gracefully.
`requestAnimationFrame`	Adds a subtle delay by measuring the time difference across animation frames and yielding execution until the browser is ready.
`clearTimeout` / `clearInterval` / `cancelAnimationFrame`	Fully respected and properly tracked, so cancelling still works perfectly.

Under the hood, these replacements insert a two-stage implicit delay around scheduled tasks — just enough for the browser to breathe without making apps feel sluggish.

✅ Key Features

⚡ Reduces unnecessary CPU usage
🔋 Improves battery life
💻 Optimizes responsiveness during heavy workloads
🧠 Smart async delay mechanism with DOM-based triggers
⛔ Fully respects cancellation (no memory leaks!)
🧩 Compatible with all websites — no modifications to content
🧪 Special handling for performance-sensitive sites like YouTube + Brave

🚫 What it doesn't do

❌ It doesn’t block content, ads, or trackers
❌ It doesn’t interfere with page visuals or features
❌ It doesn’t slow down websites unnecessarily
✅ It only intercepts background scripting in a subtle way

🖼️ Where does it run?

This script runs on all http:// and https:// pages, except direct links to file types like images or logs:

.txt, .png, .jpg, .jpeg, .gif, .xml, .svg, .manifest, .log, .ini

That means no interference with direct downloads, image views, or text-only pages.

🧪 Browser Compatibility

Browser	Status
Chrome / Chromium	✅ Full support
Firefox	✅ Full support
Edge	✅ Full support
Brave	✅ Special handling for YouTube
Safari	⚠️ Mostly works, limited mutation timing accuracy

Also works with:

✅ Tampermonkey
✅ Violentmonkey
✅ Greasemonkey (v4+)

🔐 Security & Safety

🧠 No external libraries
🕵️ No trackers or network requests
🚫 Doesn’t collect or share data
📦 MIT Licensed — open and inspectable

🧙 Author

CY Fung
🔗 GitHub Support Page

🧾 License

MIT License
You are free to use, modify, and redistribute.