Microsoft has finally confirmed that it has added a new
experimental tab-snoozing or freezing feature to Chromium Edge.
The feature is officially known as sleeping tabs and it lets
you dismiss open tabs temporarily, then restore them
automatically after a certain period of time configured by you.
This feature is now live in the beta channel and it’s brilliant
if you’re fed up with resources-hungry web browsers. It was
introduced originally with Chromium 79 and it’s now coming to
Microsoft Edge with an improved mechanism to cut down memory,
CPU, and battery resources on desktop.
Tabs that have been in the background will be frozen and
Microsoft says it will turn off the background tasks. This
could reduce your Windows 10’s memory usage by 32%, CPU usage
by 37%, and also increase your device battery life.
Note that performance improvement also depends on configuration
and usage. However, Microsoft’s feedback data suggests that
early testers have observed a significant drop in resource and
Also, there is an exception for playing audio and video. In
other words, Microsoft Edge won’t freeze your background tabs
when the screen is being recorded or video/audio is being
To try it yourself, you would need to install Chromium Edge
beta builds, enable the feature from the Settings. You can also
change the settings and choose when the tabs should go to sleep
– instantly, after a few minutes, one hour, two hours, or more.
Microsoft is also aware of an issue where some sites might not
work when you resume them after they go to sleep. To address
the potential compatibility issues, Microsoft Edge will
automatically detect those websites and prevent tabs from going
Microsoft Edge update with performance upgrade,
new Fluent Design, touch UI tweaks, and other improvements
will begin rolling out to users in the first half of 2021.