Tab Split View — Firefox Extension

A Firefox extension that splits your tabs into a side-by-side layout with one click (or a keyboard shortcut).

---

What It Does

When you have multiple tabs open and trigger the extension:

• 🖥️ Right window — your currently active tab
• 🖥️ Left window — all your other tabs, grouped together

Each window takes up exactly half your screen, giving you a clean split-screen workspace without needing any third-party software.

---

How to Use

Option 1 — Toolbar button Click the Tab Split View icon in your Firefox toolbar.

Option 2 — Keyboard shortcut Press Option + X (Mac) / Alt + X (Windows/Linux)

You need at least 2 tabs open for the split to work.

---

Installation

From Firefox Add-ons (easiest)

Coming soon on addons.mozilla.org

Manual Install (Developer Mode)

1. Download or clone this repo
2. Open Firefox and go to about:debugging
3. Click This Firefox
4. Click Load Temporary Add-on…
5. Select the manifest.json file from the extension folder

---

Files

File	Purpose
manifest.json	Extension configuration, permissions, and shortcut definition
background.js	Core logic — splits tabs into two positioned windows
icons/icon48.png	Toolbar icon

---

Permissions Used

Permission	Reason
tabs	Read and move tabs between windows
windows	Create and position browser windows

---

Contributing

Have an idea for an improvement? Open an issue or submit a pull request on GitHub.

---

License

MIT — free to use and modify.