[dynamic_sausage]

> I wish there was an option to make it more compact than the "compact" layout.

You can make the url bar smaller by setting the layout.css.devPixelsPerPx in your about:config to a value between 0 and 1. This can also be done by adding the following line to your user.js:

user_pref("layout.css.devPixelsPerPx", 0.8);

[m463]

or just get a 4k monitor and realize things are too small and you need the extra space for readability.