Facebook Messenger Sidebar by GashWare
Ultra lightweight, robust, dynamic and resource-efficient Facebook Messenger docked to the Firefox sidebar.
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About this extension
An ultra-lightweight, fast, and resource-efficient Facebook Messenger extension docked directly into your Firefox sidebar.
✨ Key Features:
• Native Sidebar Docking: Chat with friends and colleagues without switching tabs or losing your workflow.
• Ultra-Lightweight: Built with pure vanilla JavaScript and CSS — zero heavy third-party frameworks.
• Memory Saver Engine: Integrated sleep mode frees memory and suspends background activity when idle (Ctrl+Alt+S).
• GPU-Accelerated Dynamic Zoom: Smooth scaling from 50% to 160% with instant keyboard shortcuts (Ctrl + / Ctrl - / Ctrl 0).
• Pop-out Mode: One-click pop-out to open your chat in a dedicated floating mini-window.
• Adaptive Theme: Automatically matches your Firefox Dark and Light themes.
• Privacy Focused: Zero telemetry, zero tracking, and no data collection.
⌨ Keyboard Shortcuts:
• Ctrl + Alt + M (Mac: Cmd + Alt + M) — Toggle Messenger Sidebar
• Ctrl + Alt + S (Mac: Cmd + Alt + S) — Toggle Memory Saver / Sleep Mode
• Ctrl + + / Ctrl + - — Zoom In / Out
• Ctrl + 0 — Reset Zoom to 100%
• F5 / Ctrl + R — Reload Messenger
✨ Key Features:
• Native Sidebar Docking: Chat with friends and colleagues without switching tabs or losing your workflow.
• Ultra-Lightweight: Built with pure vanilla JavaScript and CSS — zero heavy third-party frameworks.
• Memory Saver Engine: Integrated sleep mode frees memory and suspends background activity when idle (Ctrl+Alt+S).
• GPU-Accelerated Dynamic Zoom: Smooth scaling from 50% to 160% with instant keyboard shortcuts (Ctrl + / Ctrl - / Ctrl 0).
• Pop-out Mode: One-click pop-out to open your chat in a dedicated floating mini-window.
• Adaptive Theme: Automatically matches your Firefox Dark and Light themes.
• Privacy Focused: Zero telemetry, zero tracking, and no data collection.
⌨ Keyboard Shortcuts:
• Ctrl + Alt + M (Mac: Cmd + Alt + M) — Toggle Messenger Sidebar
• Ctrl + Alt + S (Mac: Cmd + Alt + S) — Toggle Memory Saver / Sleep Mode
• Ctrl + + / Ctrl + - — Zoom In / Out
• Ctrl + 0 — Reset Zoom to 100%
• F5 / Ctrl + R — Reload Messenger
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Permissions and data
Required permissions:
- Access your data for sites in the messenger.com domain
- Access your data for sites in the facebook.com domain
- Access your data for sites in the fbcdn.net domain
- Access your data for sites in the facebook.net domain
Data collection:
- The developer says this extension doesn't require data collection.
More information
- Add-on Links
- Version
- 1.0.0
- Size
- 31.54 KB
- Last updated
- 9 days ago (Sep 15, 2026)
- Related Categories
- License
- MIT License
- Privacy Policy
- Read the privacy policy for this add-on
- Version History
- Add to collection