Sleep Mode

Name: Sleep Mode
Rating: 3.4828 (29 reviews)
Author: matico

Sleep Mode will temporarily put all tabs to sleep mode for saving RAM memory, saving battery and make your computer/laptop faster.

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Sleep Mode is a powerful Chrome extension designed to optimize your browsing experience by temporarily putting all inactive tabs into sleep mode. This saves valuable RAM memory and battery life, resulting in a faster and more efficient computer or laptop.

While keeping your current working tab active for uninterrupted productivity, Sleep Mode automatically wakes tabs as you switch to them, ensuring seamless workflow. It features customizable settings including options to ignore pinned tabs, tabs with audio playback, as well as Google Docs and Office Online tabs. You can also manage sleep behavior per tab via context menu options. With Sleep Mode, enjoy improved system performance and extended battery life without disrupting your work.

Add-on

By:

matico

Daily users:

769 -9

Rating:

3.48

(29)

Version:

2.2.2 Last updated: 2019-11-17

Version code:

4903478

Creation date:

2019-03-27

Risk:

Permissions:

tabs
activeTab
webNavigation
storage
<all_urls>
contextMenus

Size:

1.74MB

Email:

ma*****@gmail.com

URLs:

Website

Full description:

Source:

Firefox Browser Add-ons

Data ingested on:

2025-07-12

Ranking

# 3,559 ▼ 8

Other rankings

#342 in Tabs

#9 in laptop keyword 5

#17 in model keyword 36

#36 in memory keyword 14 ▲ 1

#61 in dark mode keyword 63 ▼ 2

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Other platforms

Sleep Mode (v2.2.2)

1,000 3.40

(10)

User reviews

Users appreciate Sleep Mode's ability to reduce RAM, CPU usage, and energy consumption by sleeping inactive tabs, especially benefiting those with many open tabs or older hardware. However, multiple reviews cite issues with the timer function not working properly, forced tab reloads disrupting workflow, and problems opening new tabs from links. The extension has limited customizable settings and causes crashes in certain Linux environments. Despite these drawbacks, users find the core idea beneficial and use it to improve browser performance and battery life.

Pros

Effectively reduces RAM and CPU usage by putting tabs to sleep, improving browser and system performance.
Good for extending battery life and reducing energy consumption on laptops.
Simple and useful concept for users who keep many tabs open.
Helps prevent Firefox from consuming bandwidth when idle.
Long-term users appreciate its impact on old or low-powered machines.

Cons

Timer/sleep duration feature does not work reliably; tabs go to sleep immediately or not at all.
Tabs reload upon disabling the extension or when the extension activates, causing delays and session disruptions.
Opening new tabs via middle-click or ctrl-click results in blank or non-loading tabs.
Limited settings and options; lacks whitelist or granular control for specific tabs or sites.
Causes crashes or instability issues on some Linux distributions.

Recent reviews

This extension is brilliant, really. But it would be even better if one could set it to start automatically on browser startup

by ka*****, 2025-05-05

by ly*****, 2025-05-04

by 远离*****, 2025-03-31

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.

Sleep Mode 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.
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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 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.

Sleep Mode 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 **** ********* *** ***** **** **** * ****** **** ***** ********** *** **** ****** ** ** ****** *** *****
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