Firefox users can now improve their browser based on the abovementioned fact by using a great Firefox add-on titled Compact Toolbar Buttons. This little add-on decreases the in-between spaces of your toolbar buttons. Here by toolbar buttons, we mean the back, forward, stop, refresh, and home buttons.

Here is how the buttons on our Firefox looked prior to using the add-on:

Now have a look at the effect Compact Toolbar Buttons had:

The difference is quite noticeable.

If you want the buttons to occupy even lesser space, you can right click on the main toolbar, and enter customize:

In the upcoming window, check the ‘Use Small Icons’ checkbox as shown in the image below:

As a consequence of the buttons taking up lesser space, the in-between spaces of the shortcuts on your bookmarks toolbar also is also reduced. Compact Toolbar Buttons may not be an add-on making a huge difference, but the effect it has is still noticeable and significant. Try the add-on now and feel the free space yourself.