I keep a lot of tabs open in Firefox during my workday. When a lot of tabs are open, I can barely see the webpage title displayed in the tab. Since widescreen displays are so common, why do not browsers use the extra horizontal space to show tabs on the side instead of the top?
That is precisely what Tree Style Tab extension for Firefox does.
F1is the keyboard shortcut to toggle the side view of tabs.
Tried with: Firefox 74.0