Total Suspender

A minimalistic web extension for firefox that suspends natively (with tabs.discard) all non-active tabs and requires only minimal permissions to store it's settings and filter URL's.

Total Suspender is a lightweight and minimalistic Firefox extension designed to improve your browsing experience by suspending all non-active tabs using Firefox's native tabs.discard feature. This reduces memory usage and helps keep your browser running smoothly.

Key features include a whitelist for URLs or partial URL patterns to prevent suspension of important tabs, the ability to ignore tabs that are playing sound, and a delayed suspend feature that lets you fine-tune when tabs should be suspended. Total Suspender requires only minimal permissions, focusing on storing its settings and managing filter URLs securely.

This extension is actively maintained, and the developer welcomes feedback and feature requests through user reviews.

Manifest V2 Add-on
By:
k5md
Daily users:
1,932 -21
Rating:
4.15
(79)
Version:
3.7.0 Last updated: 2020-04-18
Version code:
5007495
Creation date:
2019-02-02
Risk:
Moderate risk impact Low risk likelihood
Permissions:
  • storage
  • tabs
  • menus
Size:
233.29KB
Email:
k5*****@yandex.ru
URLs:
Website
Full description:
See detailed description
Source:
Firefox Browser Add-ons
Data ingested on:
2025-07-14

User reviews

Total Suspender is praised for its customizable suspension time, lightweight design, and simplicity, effectively managing tab suspension without complex permissions. Users appreciate its basic features but repeatedly request manual control over suspension and clearer visual indicators for suspended tabs. Performance issues appear when managing very large numbers of tabs, and some report higher memory consumption after installation. The extension could be improved by enhancing visual cues for suspended tabs and enabling manual tab management.
Pros
  • Allows customization of suspension time, including longer durations like two hours, unlike some other extensions.
  • Lightweight and efficient, uses minimal permissions.
  • Simple and easy to use with straightforward options.
  • Effectively suspends tabs to reduce resource usage.
  • Displays number of open tabs on the addon icon, although limited to 3 digits.
Cons
  • Lacks a clear visual indicator or notification of suspended tabs; users want icons or tab text to be greyed out or show transparency.
  • Does not allow manual suspension or unsuspension of tabs, being fully automated.
  • Has performance issues when handling very large numbers of tabs (thousands), leading to sluggishness.
  • Some users report increased memory usage after installing the extension.
  • Tab icons do not change when a tab is suspended, causing confusion.
Recent reviews
使いこなせなかったのでやめます。
by Fi*****, 2025-03-17

by Fi*****, 2024-10-20

by SB*****, 2024-07-21
View all user reviews ›

Extension safety

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.

Total Suspender 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 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.

Total Suspender has earned a fairly good reputation and likely can be trusted.

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