🔥 Fireside

Fireside is a stylesheet for Firefox that provides you with a clean UI. Less clutter, more vertical space.

Features

Vertical tabs (using Tab Center Reborn or Sidebery)
Zero UI elements taking vertical space
Auto-collapsing sidebar preserving horizontal space and removing distraction
Keyboard and mouse support

Tested with

Firefox 121 - 133b3, Linux (Wayland)

Contribute by submitting a PR for successful tests on other platforms or open an issue if unsuccessful.

Installation

Go to about:config and set toolkit.legacyUserProfileCustomizations.stylesheets to true
Install the Tab Center Reborn addon or Sidebery
For Tab Center Reborn, in the addon settings, enable "Compact Mode" and copy the custom stylesheet from here
In your Firefox Profile Directory (see about:support if you're not sure where it is) create a chrome directory and place the userChrome.css file inside
Restart Firefox

Usage

Open the sidebar either using the mouse or by focusing on the location bar with Ctrl+L
Back, Forward, Refresh, and other useless buttons were removed. Use touch gestures (two fingers slide), keyboard (Alt+Left, Alt+Right, Ctrl+R), or right click instead
Extensions menus are available through the Extensions overflow button, on the right side of the location bar