Reviews of Sleep Mode

By: matico

List of user reviews and ratings for Sleep Mode

Total ratings

3.53 (Rating count: 30)

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Review summary

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

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User Reviews

Recent rating average: 3.80

All time rating average: 3.53

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12% (4)

Date	Author	Comment
2026-01-08	DO*****

2025-05-05	ka*****	This extension is brilliant, really. But it would be even better if one could set it to start automatically on browser startup
This extension is brilliant, really. But it would be even better if one could set it to start automatically on browser startup
2025-05-04	ly*****