Tab Cloner in Window

An extension for Chromium-based browsers (like Google Chrome, Brave, Edge). When activated via keyboard shortcut (default: Ctrl+Shift+0), it clones the current tab and opens it in a new separate window.

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🧩 Features

• Clone the active tab into a new window
• Customizable keyboard shortcut
• No data collection
• 100% open-source

🖥️ Compatible Browsers

• Google Chrome
• Brave
• Microsoft Edge
• Opera (Chromium-based)

📦 Manual Installation

1. Download or clone this repository
2. Go to chrome://extensions in your browser
3. Enable Developer Mode (top right)
4. Click “Load unpacked”
5. Select the folder with the extension files

⌨️ Shortcut

• Default: Ctrl + Shift + 0
• Changeable at: manifest.json

📁 Files

• manifest.json: extension config file
• background.js: main logic for cloning the tab
• Icons: icon16.png, icon48.png, icon128.png

🛡️ Security

This extension does not access or collect any personal data. It only uses essential permissions: tabs and windows.

📜 License

MIT — feel free to use, modify, and share.

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⚠️ Note: Chromium does not allow Ctrl + Enter as a shortcut like Firefox does. This extension exists because Chromium lacks that feature.

This extension is perfect for use with the Gnome Extension PaperWM + Web Apps.
On Firefox, pressing Ctrl + Enter already opens the tab in a new window, making it ideal for placing windows side by side using PaperWM.
Chromium lacks this option — so I built this extension.

The Chromium browser does not natively offer a keyboard shortcut to clone the current tab into a new window.

What it does offer:

• Ctrl + N: new empty window
• Ctrl + Shift + N: new incognito window
• Right-click tab → "Move tab to new window" (manual)

💡 Perfect for ChatGPT users: easily create multiple new chats side by side using Web Apps + PaperWM.

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💡 Want Ctrl + Enter like in Firefox?

You can simulate it with a custom system shortcut using autokey or ydotoold.

1. Create a script with ydotool to simulate Ctrl + Shift + 0. Example:

   #!/bin/bash
   ydotool key 29:1 42:1 11:1 11:0 42:0 29:0

2. Go to System Settings > Keyboard > Custom Shortcuts.

3. Create a new shortcut, set the key combination to Ctrl + Enter, and assign it to the script above.

4. Make sure ydotoold runs on system startup (add it to your startup applications).

Done! Now when you press Ctrl + Enter, the system will simulate Ctrl + Shift + 0 — opening the current tab in a new window in chromium, just like Firefox.

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Feedback is welcome!

I'm not a developer (yet), I made this extension just to solve a personal need. I like Chromium, but missed this simple Firefox feature.