NoMoreTabs Firefox

NoMoreTabs

Stop websites from opening unwanted new tabs. Includes iframe and shadow-dom protection.

Features & Capabilities

Are you tired of clicking on a website only to have it open three different spam tabs, betting sites, or unwanted advertisements? NoMoreTabs is the advanced guardian you need.

Unlike standard popup blockers that only catch basic windows, NoMoreTabs uses deep-interception technology to stop links hiding inside Iframes and Shadow DOM components. You decide exactly what opens on your computer.

🚀 Key Features:

  • Ask Before Opening: Every time a website tries to open a new tab (via window.open or target="_blank"), a modern, non-intrusive overlay appears. You choose: Allow or Block.
  • Deep Protection: We block redirects originating from complex web components and hidden advertising frames (Iframes & Shadow DOM) that other extensions miss.
  • Smart Blacklist: Tired of a specific spammy domain? Check "Always block" to permanently ban that site from opening tabs.
  • Current Site Blocking: Quickly block the site you are currently viewing via the extension menu.
  • Zero Data Collection: We do not track your browsing history. Your data stays on your device.

🛡️ Perfect for:

  • Users of free movie streaming or manga sites full of hidden redirects.
  • Anyone who values a clean, safe, and controlled browsing environment.

How it works:

  • Click a link.
  • If it tries to open a new tab, NoMoreTabs pauses it.
  • A popup shows you the destination URL.
  • Click Block to stop it, or Allow if it's safe.

Install NoMoreTabs today and stop the spam!

User Growth & Download Statistics

Manifest V3 Add-on
By:
Linh Nguyen
Daily users:
12
Rating:
5.00
(1)
Version:
4.2 Last updated: 2025-12-19
Version code:
6100060
Creation date:
2025-12-16
Risk:
High risk impact Moderate risk likelihood
Permissions:
Host permissions:
  • <all_urls>
Content scripts matches:
  • <all_urls>
Size:
118.26KB
Email:
li*****@gmail.com
URLs:
Website
Full description:
See detailed description
Source:
Firefox Add-ons Store
Data ingested on:
2026-06-17
Compare stats and ranking:

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:
Linh Nguyen
Firefox Add-ons Store
https://addons.mozilla.org/firefox/addon/nomoretabs/
Email:
li*****@gmail.com
Website:
https://portal.malitool.com

User Reviews

Good
by To*****, 2025-12-29
View all user reviews ›

Is NoMoreTabs 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.

NoMoreTabs requires some sensitive permissions that could impact your browser and data security. 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.
  • Critical ****** ****** ** *** ********* ****** * *********** ******** **** ** ** *** ******* *** ****** **** **** *** ******* *****
  • High ******* ******* **** *** ****** ***** *** ***** ** ******* **** ********* ********* ** * *********** *****
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.

NoMoreTabs 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.
  • Low **** ********* *** ******* **** **** * ****** **** ***** ******** *** **** ****** ** ** ****** *** *****
  • Low **** ********* *** ***** **** **** * ****** **** ***** ********** *** **** ****** ** ** ****** *** *****
  • Good **** ********* *** **** **** *******
Extension Guard
Extension Guard

Discover every extension in use, analyze risks, and enforce blocking policies with Extension Guard

Secure Your Browser
Upgrade to see full risk analysis details

Best NoMoreTabs Alternatives

Here are some Firefox add-ons that are similar to NoMoreTabs: