Firefox will soon have the same hovering tab previews as Google Chrome and Microsoft Edge.
https://www.howtogeek.com/mozilla-firefox-is-adding-hover-tab-previews/?utm_source=dlvr.it&utm_medium=blogger
https://www.howtogeek.com/mozilla-firefox-is-adding-hover-tab-previews/?utm_source=dlvr.it&utm_medium=blogger