Kill duplicate tabs instantly. Stay focused.

• Badge Counter - Shows how many duplicate tabs you have
• One-Click Cleanup - Close all duplicates with one button
• Keyboard Shortcut - Cmd+U (Mac) or Ctrl+U (Windows/Linux)
• Real-Time Updates - Badge updates automatically as you browse

git clone https://github.com/jeanlucaslima/ato.git
cd ato
npm install
npm run icons
npm run build

1. Open chrome://extensions
2. Enable Developer mode (toggle in top right)
3. Click Load unpacked
4. Select the dist/ folder

• Press Cmd+U / Ctrl+U to open the popup
• Or click the ATO icon in your toolbar
• Click Close duplicates to remove all duplicate tabs

# Watch mode (auto-rebuild on changes)
npm run dev

# Run tests
npm test

# Build for production
npm run build

After changes, click the refresh icon on chrome://extensions to reload.

src/
├── manifest.json           # Extension configuration
├── background/
│   └── service-worker.js   # Tab monitoring, badge updates
├── popup/
│   ├── popup.html          # Popup UI
│   ├── popup.css           # Styles
│   └── popup.js            # Popup logic
├── shared/
│   ├── tab-utils.js        # Shared utility functions
│   └── tab-utils.test.js   # Tests
└── assets/icons/           # Extension icons

MIT