# Smart Prevent Duplicate Tabs

> Prevents AUTOMATIC creation of new tabs or repeating tabs when two or more tabs have the same addresses. The process of closing repeated tabs is automatic based on the settings that you can determine within the extension/add-on.

Canonical page: [https://chrome-stats.com/d/smart-prevent-duplicate-tabs](https://chrome-stats.com/d/smart-prevent-duplicate-tabs)

## Overview

- **ID:** `smart-prevent-duplicate-tabs`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** Guilherme Nascimento
- **Category:** other,tabs
- **Daily users:** 351
- **Weekly downloads:** 9
- **Rating:** 4.00 / 5 (19 ratings)
- **Version:** 0.7.10
- **Last updated:** 2023-04-05
- **First published:** 2018-01-08
- **Size:** 47 KB
- **Data as of:** 2026-09-12
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/smart-prevent-duplicate-tabs/)
- **Website:** [https://github.com/brcontainer/prevent-duplicate-tabs/issues](https://github.com/brcontainer/prevent-duplicate-tabs/issues)

## Description

Smart Prevent Duplicate Tabs is a powerful Chrome extension designed to streamline your browsing by automatically preventing the creation of duplicate tabs with the same URLs. It intelligently closes repeated tabs based on customizable settings, such as whether to consider query strings or hashes, which tabs to close first (oldest or newest), and whether to protect your currently active tab.

The extension supports incognito mode with isolated tab management and features an easy toggle to activate or disable the add-on without accessing the extensions panel. Users can specify URL exceptions to preserve important tabs. It operates seamlessly by listening to various Chrome API events like tab creation, updates, replacements, and attachments, ensuring your browser remains organized and efficient.

## Rankings

- #6,219 — Overall
- #3 — prevent
- #17 — event
- #24 — smart
- #35 — smartbook
- #38 — present

## Permissions and access

### Permissions

- `tabs`
- `storage`

## Safety

- **Risk impact:** Moderate risk impact
- **Risk likelihood:** Low 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).

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Source: [Chrome-Stats](https://chrome-stats.com/d/smart-prevent-duplicate-tabs)