As you add new Firefox extensions, though, the toolbar can become filled with unwanted icons. This guide will explain how to remove a button from the Firefox toolbar.

For example, you can't add a button to set a specific line spacing value. If you can't add the button, no option to "Add to Quick Access Toolbar" will appear when you right-click the ribbon.

Mozilla Firefox supports an Extension button on the toolbar, but it must first be enabled. We explain how to do it and add the button.

To add a new button to the Firefox toolbar, right click on any of the toolbar icons and a menu should appear as shown below.