Lean Site Blocker 🔒

A minimalist bloatless Chrome extension that instantly closes tabs when users try to visit blocked websites.

Screenshot

Installation

Install from the Chrome Web Store: Lean Site Blocker

Local Development

1. Clone the repository
2. Go to chrome://extensions
3. Enable Developer mode
4. Click ”Load unpacked”
5. Select the folder containing this project

Usage

1. Click the extension icon in your browser toolbar
2. The current tab's domain is pre-filled — or type any domain like youtube.com
3. Press Add or hit Enter
4. Try to visit the site — the tab will instantly close

To remove a domain, click Remove next to it in the popup.

How It Works

• Listens to tab updates via chrome.tabs.onUpdated
• If the URL matches a blocked domain (including subdomains), the tab is automatically closed
• All data is stored locally via chrome.storage.local — nothing leaves your device

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