To improve memory and CPU utilization of the Microsoft Edge browser, Microsoft has developed a feature called sleeping tabs.
Early internal testing of devices with sleeping tabs has shown a median memory usage reduction of 26% for Microsoft Edge. Microsoft’s internal testing has also shown that a normal background tab uses 29% more CPU for Microsoft Edge than a sleeping tab. These resource savings should result in excellent battery savings. Although individual device performance varies depending on configuration and usage, Microsoft expects the decrease in resource and battery usage to create a better browsing experience for users.
Sleeping tabs builds upon the core of Chromiumâ€™s â€śfreezingâ€ť technology. Freezing pauses a tabâ€™s script timers to minimize resource usage. A sleeping tab resumes automatically when clicked, which is different than discarded tabs, which require the page to fully be reloaded.
Microsoft built upon the freezing technology to create sleeping tabs. This feature allows inactive background tabs to â€śgo to sleep,â€ť releasing system resources after a set amount of time. These resources include both memory and CPU and can be used for new or existing tabs or other applications running on your device.
By default, Microsoft set tabs to go to sleep after two hours of inactivity when sleeping tabs is enabled. If two hours isnâ€™t right for you, you can choose a different time interval. Tabs that are asleep will fade to let you know theyâ€™ve released resources. To resume a sleeping tab, click on it like a normal tab. The tab will un-fade and your content will be there immediately. You can also add sites you never want to sleep to a block list in Settings.
Starting with Microsoft Edge Canary 91.0.837.0 and later, you can now turn on or off Fade sleeping tabs.
This tutorial will show you how to enable or disable fade sleeping tabs in the Chromium based Microsoft Edge.