Here is how to change User Interface Density in Firefox. Also we will see how to enable Compact Density in Firefox 89 and above.
As you may already know, Firefox 57 comes with a new UI, known as "Photon". The default appearance of the browser includes a default theme with a dark blue title bar. There are few themes which come pre-installed with the browser. In addition to themes, Firefox allows changing the user interface density. In this article, we will see how it can be done.
