Close Similar Tabs

Close Similar Tabs

Close similar tabs with this lightweight and simple extension.

Close Similar Tabs promo image
What is Close Similar Tabs?

Close Similar Tabs is a Firefox add-on by SY-dev. This add-on has 96 daily active users and a perfect 5.0 rating. The latest version, 2.1, was updated 3 years ago.

Stats date:
By: SY-dev
Users: 96 ▲ 1
Rating: 5.00 (7)
Version: 2.1 (Last updated: 2020-09-07)
Creation date: 2018-02-03
Weekly download count: 4
Firefox on Android: No
Manifest version: 2
  • tabs
  • menus
  • storage
Size: 54.55K
Risk impact: Moderate risk impact
Risk likelihood: Low risk likelihood
Found a bug?

Other platforms

Not available on Chrome
Not available on Edge

Use by right-clicking any active tab then click "Close Similar Tabs" from the drop-down menu. When activated, this extension will close all tabs that shares the same URL domain name as the initial tab. The number in brackets next to "Close SImilar Tabs" indicates the number of similar tabs (matching URL domain name) that are currently active.


Access browser tabs: This permission is required to read and compare the URL of open tabs and to execute the close command for tabs.


The user may change the following options in the extension's option page:

  • Choose whether "Close Similar Tab" only closes tabs on the current active Firefox browser window or across all active Firefox browser windows.
  • The user may select whether or not a confirmation box pops up before closing multiple tabs.
Risk impact

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

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, bypass your security settings, and access your personal data. High risk impact extensions are not necessarily malicious. However, if they do turn malicious, they can be very harmful.

Risk likelihood

Close Similar Tabs has earned a fairly good reputation and likely can be trusted.

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 Browser Add-ons, 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, especially ones with higher risk impact and/or higher risk likelihood.

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User reviews
by Vedun, 2023-02-11
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