Sleep Mode

Name: Sleep Mode
Rating: 3.5333 (30 reviews)
Author: matico

By: 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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Features & Capabilities

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.

User Growth & Download Statistics

Add-on

By:

matico

Daily users:

765 -11

Rating:

3.53

(30)

Version:

2.2.2 Last updated: 2019-11-17

Version code:

4903478

Creation date:

2019-03-27

Risk:

Permissions:

Size:

1.74MB

Email:

ma*****@gmail.com

URLs:

Website

Full description:

Source:

Firefox Add-ons Store

Data ingested on:

2026-06-19

Compare stats and ranking:

Ranking

# 3,827 ▼ 42

Other rankings

#365 in Tabs ▼ 7

#7 in laptop keyword 3 ▲ 1

#20 in model keyword 40 ▼ 1

#53 in memory keyword 15 ▼ 3

#74 in keep keyword 60 ▼ 1

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Other platforms

Sleep Mode (v2.2.2)

1,000 3.40

(10)

For Developers

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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:

matico

Firefox Add-ons Store

https://addons.mozilla.org/firefox/addon/sleep-mode/

Email:

ma*****@gmail.com

Website:

https://www.linkedin.com/in/mactiencong/

User Reviews

Sleep Mode is praised for real memory and CPU savings by sleeping inactive tabs, often dramatically cutting RAM use and improving battery life. However, the timer is frequently unreliable, enabling/disabling can reload tabs and disrupt sessions, and Linux users report crashes. It can also break tab-opening behaviors. Users want more granular controls (per-tab sleep/whitelisting) and easier timer updates. Overall, it’s effective when working but plagued by stability and usability issues that hinder everyday use.

Pros

Significant RAM savings by sleeping inactive tabs
Lower CPU usage and longer battery life when tabs are slept
Overall positive and effective when the feature works

Cons

Timer feature is unreliable or non-functional (doesn't reset or apply correctly)
Enabling/disabling can reload all tabs or discard-loaded tabs, breaking the session
Causes instability on Linux and Firefox crashes in some setups
Disrupts normal tab opening (middle-click/ctrl-click) and URL handling
Limited settings and lack of per-tab controls/whitelisting; timer updates require disabling and restarting

Recent reviews

by DO*****, 2026-01-08

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

View all user reviews ›

Is Sleep Mode 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.

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 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.

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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