How Save Memory in Edge browser with Sleeping Tabs feature?

Some people love to keep dozens of tabs open simultaneously, but those hog up precious system memory. Tell them to close a few, and you’ll get a nasty look. If that sounds like you, Microsoft Edge’s “Sleeping Tabs” lets you save RAM and your tabs.

Instead of closing tabs, the built-in feature puts them to “sleep” by suspending them after they’ve been inactive for a while. Suspending a tab reduces how much memory and CPU it can use in the background. When you open the tab, it wakes up again. This feature is advantageous if your PC or laptop has low memory or installed lesser RAM.

The Sleeping Tabs feature of the Edge browser automatically detects tabs that have not been used for a specified period and puts those inactive tabs to sleep (i.e., discharges or suspends those tabs from memory). According to Microsoft, the Sleeping tabs feature helps save up to 29% of system resources, including battery power.

Sleeping Tabs is available starting with version 88 of Microsoft Edge for Windows, Mac, and Linux and might already enable for you by default. This risewindows article will guide you on saving memory in the Edge browser with the sleeping tabs feature.

How to Enable or disable Sleeping Tabs in the Microsoft Edge browser?

By default, the Sleeping Tabs feature is not enabled in Microsoft Edge. So, you need to activate manually and it will allow it if you are interested in this feature. Microsoft has provided a secret preference/flag to turn on/off the Sleeping Tabs feature. To enable or disable the Sleeping Tabs feature to save resources or memory, perform the following steps:-

Step 1. First, open the Microsoft Edge browser and type edge://flags/ in the address bar. Then, press Enter from the keyboard.

Edge-flags-1024x612 (1)

Step 2. Now, type sleep in the “Search flags” box.

Here, you will see the following options:-

Enable Sleeping Tabs

Automatically puts idle background tabs to sleep to save resources. – Mac, Windows


Enable immediate timeout for Sleeping Tabs

Ignore the Sleeping Tabs timeout setting and put background tabs to sleep immediately. – Mac, Windows


Sleeping Tabs use observed site characteristics heuristics

Sleeping Tabs should consider observed site characteristics as heuristic violations when opting-out domains. These characteristics are related to background notification, such as modifying the tab title text, and favicon, or playing the audio while backgrounded. – Mac, Windows


Step 3. After that, set the “Enable Sleeping Tabs” option to Enabled using the drop-down box to enable and activate the Sleeping Tabs feature.

Step 4. Next, click the Restart button from the right-side bottom of the Edge browser.

Then, the Sleeping Tabs feature is successfully activated.

Here, the other two options are unnecessary.  Although, if you want to immediately put inactive tabs to sleep as soon as you leave the tabs, set the “Enable immediate timeout for Sleeping Tabs” option to Enabled using the drop-down box. Finally, click on the Restart button.

After enabling the Seeping Tabs feature on the Edge browser, you can customize or configure Sleeping Tabs functionality using the Microsoft Edge Settings page. Now, click on the 3-dots menu button present on the right side of the toolbar. Then, select the Settings option from the main menu to access the Settings page. Alternatively, directly open the Edge Settings page using the edge://settings/ URL in the address bar.

Now, click on the System tab, and in the right-side pane, you’ll see the “Save resources” section.

So, you can save the resources by turning on the “Save resources with sleeping tabs” option from the “Save resources” section.

Here, when the Tab is considered inactive tabs in Edge.  You can specify the time by selecting the timing of inactivity from the option “Put inactive tabs to sleep after the specified amount of time.” So, you can choose the option 5 minutes of inactivity, 5 minutes of inactivity, 15 minutes of inactivity, 30 minutes of inactivity, 1 hour of inactivity, 2 hours of inactivity, 2 hours of inactivity, 3 hours of inactivity, 6 hours of inactivity, or 12 hours of inactivity.

If you want to exclude a web page from the Sleeping tabs, click the Add button next to “Never put these sites to sleep.”

A new window will open with a title, Add a site.

At last, enter the URL you want to exclude from the Sleeping tab feature and click the Add button.

Here, in Step 3 above, disable the Seeping tabs feature, then set the “Enable Sleeping Tabs” option from Default to Disabled.

That’s it for the article.

I hope this post will be helpful to you.

Good luck & keep learning, guys.

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