Mozilla’s Firefox web browser supports two display densities by default. These determine the size of the toolbar and the elements that are displayed on it.
The two options are normal and touch. Normal is the default value, unless Firefox is used on a touch display.
Firefox supported a third for a very long time officially. Called compact, it reduced the size of the main toolbar to free up room for the display of websites in the browser.
While the mode is not shown anymore by default to users of the web browser, it is still available, albeit officially as “not supported”.
Still, if you are like me, you prefer your browser’s interface as tidy as possible to give website content more room.
Here is a step-by-step guide to enabling compact mode in the Firefox web browser.
Note: This works only in Firefox for the desktop. Also, since the feature is not supported officially, there is a theoretical chance that Mozilla is going to remove it at one time. The interface would revert to the default density in that case though.
Enable Compact Mode in Mozilla Firefox

The first step enables the Compact Mode option in the interface, the second sets the interface to the mode.
- Load about:config in the address bar.
- Confirm the warning page to continue.
- Search for browser.compactmode.show.
- Click on the toggle icon to set the value of the preference to true.
- Select Menu > More Tools > Customize Toolbar.
- Locate the “Density” menu at the bottom and click on it to display its options.
- Choose “Compact (not supported)” from the available options.
Firefox changes the density of the toolbar and its elements immediately. The toolbar’s height should be a bit smaller than the height of the normal or touch toolbar.
Note that you may undo the change at any time starting at 5) above and switching to Normal or Touch under 7).
Now You: What is your preferred display mode? Smaller, with more space for websites and content, or larger?










