Tab Sorter by Etienne is a Firefox extension that organizes open tabs for users who keep many pages open. The extension sorts tabs by title, domain, favicon, LRU order or by shuffling, and it can auto-sort new tabs or extract a domain into a new window. It runs locally without telemetry and offers keyboard shortcuts plus an English/French interface. The tool suits power users and tab-hoarders needing fast, privacy-focused tab reordering.

Tab Sorter centralizes tab arrangement with several sorting modes

What it does is provide multiple concrete ordering methods: alphabetical Title sorting, URL/Domain grouping, visual Favicon grouping, Last Recently Used (LRU) ordering specific to the Firefox build, and a Shuffle mode that randomizes tab order. Those options let users change the tab bar from a chronological stack into a searchable sequence or visually grouped set without opening extension panels.

You can apply sorting rules automatically or trigger them from the keyboard

How it fits daily workflows is by offering an Automatic Sorting option that keeps the tab bar organized as new tabs open, plus domain extraction that moves all tabs from a chosen site into a separate window. The extension includes keyboard shortcuts such as Ctrl+Shift+Space for the preferred sort and Ctrl+Shift+L for domain extraction, which supports rapid reorganization during heavy browsing sessions.

Designed to minimize resource use and preserve privacy during long sessions

Performance and privacy come from a lightweight footprint and local-only operation, meaning tab processing happens on the machine with no external tracking or data transmission. The extension is a WebExtension with a stated minimal impact on browser resources, which helps it remain active during extended multi-tab work without sending browsing data off‑device.

Installation and compatibility match standard Firefox add-on expectations

Setup and compatibility are straightforward: install the add-on from Firefox as a WebExtension, and the extension runs on modern Firefox releases across Windows, macOS, and Linux. Multi-window support lets you organize tabs inside any active window. The project is maintained by Etienne Schalk and published as open-source for community inspection and contribution.

A practical choice for privacy-minded power users who need rapid tab order control

The extension is a practical option for power users who want on-device tools to reorder and group many open tabs quickly. One consideration is the focus on local sorting rather than cloud-synced session management, which limits cross-device restoration. The extension suits anyone looking to reduce tab clutter through fast, in-browser reorganization without sending browsing data beyond their machine.