# Tab Focus Sync

> Sends focTab Focus Sync monitors the active browser tab and sends focus information (tab title and URL) to a tracking hub via SignalR. It handles connection retries and stops tused tab info to the tracker hub, for tracking the time spend on each tab.

Canonical page: [https://chrome-stats.com/d/tab-focus-sync](https://chrome-stats.com/d/tab-focus-sync)

## Overview

- **ID:** `tab-focus-sync`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** ATClus
- **Category:** alerts-updates
- **Version:** 1.1.0
- **Last updated:** 2025-03-06
- **First published:** 2025-03-06
- **Size:** 39 KB
- **Data as of:** 2026-09-06
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/tab-focus-sync/)
- **Privacy policy:** [https://addons.mozilla.org/firefox/addon/tab-focus-sync/privacy/](https://addons.mozilla.org/firefox/addon/tab-focus-sync/privacy/)

## Description

Tab Focus Sync is designed to track which browser tab is active. Using Firefox’s APIs (such as browser.tabs and browser.windows), it detects when a tab is activated, updated, or closed, and communicates the focused tab's information to a backend hub via a WebSocket connection built with SignalR. The extension includes mechanisms to automatically reconnect in case of connection loss and to halt tracking after a predefined inactivity period, ensuring efficient monitoring of user engagement.

## Rankings

- #145,117 — Overall

## Permissions and access

### Permissions

- `tabs`

## Safety

- **Risk impact:** Moderate risk impact
- **Risk likelihood:** Moderate risk likelihood

### Analysis details

- Grants access to browser tabs, which can be used to track user browsing habits and history, presenting a privacy concern.
- This extension has low user count. Unpopular extensions may not be stable or safe.

> Some risk analysis details are omitted from this free response. [Upgrade to view the full analysis](https://chrome-stats.com/pricing).

## Similar extensions and apps

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- [Synced Tab Groups](https://chrome-stats.com/d/synced-tab-groups) — 45 users
- [Tab Sync Lite](https://chrome-stats.com/d/tab-sync-lite) — 18 users, 5.00 / 5
- [One Tab Focus](https://chrome-stats.com/d/one-tab-focus) — 13 users, 4.00 / 5
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Source: [Chrome-Stats](https://chrome-stats.com/d/tab-focus-sync)