Containerized by mg007

Smart window management with dedicated container windows, automatic container assignment, and flexible window strategies.

Available on Firefox for Android™

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About this extension

Containerized transforms how you use Firefox Multi-Account Containers by giving every container its own dedicated, organized window space.

🪟 Dedicated Container Windows: Automatically route tabs belonging to specific containers into their own dedicated windows.
⚡ Auto-Containerization: Convert new unassigned tabs and external app links into the container of the active window.
🎯 Flexible Assignment Strategies: Choose how windows adopt containers — by First Tab, Container of Most Tabs, Most Recent Tab, or Manual Only.
🔀 Per-Window Strategy Overrides: Customize strategies on individual windows while keeping global defaults.
🏷 Visual Toolbar Badge: Instant color-coded container badge on your toolbar reflecting the current window's identity.
🔒 100% Private & Local: Zero tracking, zero telemetry, and zero third-party dependencies.

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