Quick fix: what are those circles on my Chrome tabs?

Illustration by Samar Haddad / The Verge
    

  The issue
You may have noticed recently that of the tabs on your Chrome browser have circles around the tab’s icon and that the icon itself is smaller and slightly faded. What’s that all about — and can I change them back?
  
        
      You can see how much memory has been freed up  by... #press

https://www.theverge.com/23906182/chrome-tab-circles-meaning-browser?utm_source=press.coop