Duplicate Tabs Closer

Duplicate Tabs Closer

Enabling active mode on this add-on prevents duplicate tabs from being opened. Enabling passive mode on this add-on allows you to view the duplicate tabs in the popup UI and close the ones you don't want.

  • Duplicate Tabs Closer
  • Duplicate Tabs Closer
What is Duplicate Tabs Closer?
Duplicate Tabs Closer is a Firefox add-on that prevents duplicate tabs from being opened. It offers options to automatically close duplicate tabs, update badge icons, and customize tab behaviors.
By: matetoes
Users: 55 ▲ 3
Rating: 4.00 (2)
Version: 3.6.1 (Last updated: 2022-05-04)
Creation date: 2022-05-02
Weekly download count: 5
Firefox on Android: No
Risk impact: Moderate risk impact
Risk likelihood: Low risk likelihood
Manifest version: 2
  • cookies
  • tabs
  • webNavigation
  • storage
  • contextualIdentities
Size: 665.59K
Stats date:

Other platforms

Not available on Chrome
Not available on Edge
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NOTE: this is a fork of the original Duplicate Tabs Closer with one minor change: the addition of the Alt+Shift+D shortcut (see the bottom of the description).

★ "On duplicate tab detected" options:

  • Close tab automatically: automatically closes the detected duplicate tab.
  • Do nothing: monitor tabs and update the badge icon to indicate the number of duplicate tabs detected.

★ On remaining tab options (used with "Close tab automatically):

  • Do nothing (default): nothing is done after the duplicate tab is closed.
  • Activate: once the duplicate tab is closed, the remaining tab is activated.
  • Apply opening tab behavior: once the duplicate tab is closed, depending on the default tab behavior, the remaining tab will be moved to the position of the closed tab and activated if needed.

★ Whitelist (used with "Close tab automatically): List of urls to not close automatically. Duplicate tabs detected will be notified in badge. Wildcards is supported.

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User reviews
by hacKim, 2023-10-03
View all user reviews
Risk impact

Duplicate Tabs Closer may not be safe to use and it requires some risky permissions. Exercise caution when installing this add-on. Review carefully before installing.

Risk likelihood

Duplicate Tabs Closer has earned a fairly good reputation and likely can be trusted.

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