I am running Firefox 90.0 on Ubuntu Mate 18.04 32-bit. It seems that Firefox'es tabs and menu bar are optimized for smartphones as they are twice as high as the bars of all other programs. My netbook has a small screen and so I'd like to reduce them to ordinary size. How/is that possible?
OPTION ONE:
First, go to about:config in your URL bar.
Then, search for browser.compactmode.show and change the value to true .
Finally, go to the Hamburger-Menu > More-tools > Customize-toolbar and at the bottom of the page, click Density and select Compact.
OPTION TWO (recommended):
First, go to about:config in your URL bar.
Then, search for layout.css.devPixelsPerPx
Finally, double click on the value and change it to less than 1.0. After you set the value, press ENTER to apply the changes. For example, you can use 0.75 or if that is too big, you could try 0.5.
