Duplicate Tab Detector Firefox

Duplicate Tab Detector

By: lpelov
Automatically detects and closes duplicate tabs across all windows for a cleaner browsing experience.

Features & Capabilities

Duplicate Tab Detector is a lightweight Chrome extension that automatically finds and removes duplicate tabs across all open windows, keeping your browser tidy and fast. It detects duplicates in real time and provides one-click closing, silent auto-closing, and a clear list view for manual control.

Customize detection with ignore patterns or specific URLs, choose silent auto-close or prompt before removal, and scan across multiple windows. Ideal for multitaskers, researchers, and anyone who wants a focused, clutter-free browsing experience.

User Growth & Download Statistics

Contact the developer

Chrome-Stats does not own this Firefox add-on. Please use these information below to contact the Firefox add-on developer.
Developed by:
lpelov
Firefox Add-ons Store
https://addons.mozilla.org/firefox/addon/duplicate-tab-detector/

Permission Change History

2026-04-19: Version 2.4.2 → 2.5.1
Add Permissions: windows
2025-03-31: Version 1.8.2 → 2.2.3
Remove Permissions: activeTab
2024-11-17: Version 1.3 → 1.8.2
Add Permissions: storage activeTab

User Reviews

by Jo*****, 2026-06-10

Found that DTD works well when I'm on a tab binge. However it fails on magnet links. It has definitely improved my browsing experience. It would be nice to have an option to close the window when all duplicate tabs have been resolved.
by Gu*****, 2026-04-23

This is probably one of the most useful extensions I've come across. For online shopping and board forums, just open whatever products/topics you like and it will automatically close duplicated tabs instantly, saving so much time and headaches. You have to set them up a bit. If you don't know how to write regex, ask an AI. For example, with Amazon you can use ^(.*?(?:dp|gp\/product)\/) to compare only the ASIN in the URL. A few quirks: some params it doesn't recognize; if you mass-open bookmarks from the same domain, because the tabs aren't loaded completely, it will mistakenly close them all but one if "auto close dupes" is on. I also recommend the extension "ClearURLs". It removes almost all trailing trackers in an URL keeping it very clean.
by Mi*****, 2026-01-16
View all user reviews ›

Is Duplicate Tab Detector Safe?

Risk impact
Risk impact measures the level of extra permissions an extension has access to. A low risk impact extension cannot do much harms, whereas a high risk impact extension can do a lot of damage like stealing your password, bypassing your security settings, and accessing your personal data. High risk impact extensions are not necessarily malicious. However, if they do turn malicious, they can be very harmful.

Duplicate Tab Detector requires a few sensitive permissions. Exercise caution before installing.

Risk impact analysis details
  • Critical Grants access to browser tabs, which can be used to track user browsing habits and history, presenting a privacy concern.
Risk likelihood
Risk likelihood measures the probability that a Firefox add-on may turn malicious. This is determined by the publisher and the Firefox add-on reputation on Firefox Add-ons Store, the amount of time the Firefox add-on has been around, and other signals about the Firefox add-on. Our algorithms are not perfect, and are subject to change as we discover new ways to detect malicious extensions. We recommend that you always exercise caution when installing a Firefox add-on.

Duplicate Tab Detector is probably trust-worthy. Prefer other publishers if available. Exercise caution when installing this add-on.

Risk likelihood analysis details
  • High This extension has low user count. Unpopular extensions may not be stable or safe.
  • Medium **** ********* *** ******* ** *** **** * ******* *** ******* *** *** ** ****** ** *****
  • Low **** ********* *** ***** **** **** * ****** **** ***** ********** *** **** ****** ** ** ****** *** *****
  • Good **** ********* *** **** **** *******
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Best Duplicate Tab Detector Alternatives

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