🌐 Domain Redirector (Chrome Extension)

A simple Chrome extension that automatically redirects specific domains to custom URLs.
You can register the current domain directly from the popup window — no need to edit the code manually.

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🚀 Features

• Redirect any domain to a specified URL
• Add redirect rules directly from the popup
• Delete rules from the popup
• Persistent rules (saved in Chrome local storage)
• Uses Declarative Net Request API (Manifest V3 compliant)
• Lightweight and fast (no background polling)

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📦 Installation

1. Clone this repository:

   git clone https://github.com/yourname/domain-redirector.git
   cd domain-redirector

2. Open Chrome and go to:

   chrome://extensions/
   

3. Enable Developer mode (top-right corner).

4. Click Load unpacked and select this folder.

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🧭 Usage

1. Open any website (e.g. https://example.com)
2. Click the extension icon
3. Enter the redirect destination (e.g. https://newsite.com)
4. Click Add
5. Next time you visit example.com, it will automatically redirect to newsite.com
6. To remove a rule, click the 削除 button next to it in the list

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🛠️ Project Structure

redirect-extension/
 ├── manifest.json      # Extension manifest (v3)
 ├── background.js      # Service worker that updates redirect rules
 ├── popup.html         # Popup UI
 ├── popup.js           # Popup logic
 └── README.md          # This file

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⚙️ Tech Stack

• Manifest V3
• Declarative Net Request API
• Chrome Storage API
• Vanilla JavaScript (ES6)

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🧩 Example Rule

If you add this rule in the popup:

match: https://example.com
redirectTo: https://newsite.com

Then any request to:

https://example.com/page1
https://example.com/foo/bar

will automatically redirect to:

https://newsite.com

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🧠 Notes

• Rules are domain-based (e.g., all pages under the same origin are redirected)
• Subdomains are also matched automatically (e.g., www.example.com, blog.example.com)
• Redirects are handled natively by Chrome for maximum performance

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🪪 License

MIT License © 2025 gumuncle

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💡 Future Ideas

• Support regex or path-based redirects
• Sync rules across devices using chrome.storage.sync

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⚡ Built for developers who need to auto-redirect domains quickly and efficiently.