Automatically suspend inactive tabs
Suspend tabs after they have not been viewed for a set period and free up memory. Choose a useful interval from 30 minutes to 24 hours.
Chrome extension
Idle Tab Sleeper is a simple Chrome extension that automatically suspends tabs you have not used for a while, reducing Chrome's memory usage.

Features
Organize tabs safely without interrupting everyday browsing.
Suspend tabs after they have not been viewed for a set period and free up memory. Choose a useful interval from 30 minutes to 24 hours.
Detect only whether a form has been edited and keep that tab awake. The extension never reads the information you enter.
Keep email, work tools, and other important sites awake by adding their domains. Subdomains are protected too.
How it works
Active, pinned, audio-playing, and already suspended tabs are automatically excluded. Chrome internal pages and tabs that Chrome cannot discard are never suspended.
Select 30 minutes, 1 hour, 3 hours, 12 hours, or 24 hours.
Add domains to the exclusion list. Your settings stay on your device.
Suspended tabs remain in the tab bar and reload when you select them.
Privacy policy
Last updated: July 29, 2026
Idle Tab Sleeper makes its decisions and stores its settings entirely on your device. It requires no account, uses no analytics or advertising, and does not communicate with an external server.
The extension processes tab URLs, domains, titles, last-accessed times, tab states, and a boolean indicating whether a form has been edited.
We do not collect or store form values, passwords, page content, images, personal information, or authentication credentials.
User data is never sent to the developer or a third-party server. It is not sold, shared, used for advertising, or used to determine creditworthiness.
Settings such as the suspension interval and excluded domains are stored in Chrome's extension storage. Removing the extension also removes its saved data.
alarms is used for scheduled checks, storage stores your settings, and tabs identifies and suspends eligible tabs. HTTP/HTTPS host permissions are used only to detect whether a form has been edited so a tab with work in progress can remain awake.
The extension does not load external JavaScript, WebAssembly, or other remote code. User data is not sold, disclosed to third parties, or used for advertising.
If the extension's features or data practices change, this page will be updated and the revision date will be shown. Material changes will also be announced in the store listing or within the extension.
Support
For bug reports or feedback, please use the support section of the Chrome Web Store listing.