mess/facebook sidebar by Sardel

Side Panel for Messenger shows Facebook Messenger in the Firefox sidebar, so you can chat while browsing any page.

• Compact layout: the chat list fills the whole panel.
• Font-size slider (also Ctrl + mouse wheel) and a button to show or hide the Facebook top bar.
• Links leading outside Messenger open in a regular tab; photos and videos open inside the panel.
• Open or close the panel with Alt+Shift+M (changeable in Firefox shortcut settings).

You must be logged in to Facebook in the same Firefox profile. The add-on collects no data and does not send anything anywhere; it only changes how facebook.com/messages looks inside the sidebar. It stores only your font-size and top-bar choices locally.

Unofficial add-on. Not affiliated with, endorsed or sponsored by Meta Platforms. Messenger and Facebook are trademarks of Meta Platforms.