Customize Firefox controls, buttons and toolbars {web link}

Type about:customizing<enter> in the address box.

Note: about:customizing is no longer present in Firefox v47+ releases.

• Press Alt or F10 to bring up the Menu Bar. Then View > Toolbars >
• Right-click on a blank spot on the toolbar and select what you want.
• Right-click on a blank spot on the toolbar and select Customize Toolbar.
  Look for Show / Hide Toolbars or just Toolbars at the bottom left.
  There is also a Restore Defaults button at the bottom right.

Make sure toolbars like the "Bookmarks Toolbar" are visible. Open the Customize page and set what toolbars (Show/Hide Toolbars) and toolbar items to display.

• Right-click empty toolbar area -> Customize
• "3-bar" menu button -> Customize
• View -> Toolbars
  *you can tap the Alt key or press the F10 key to show the hidden Menu Bar temporarily

• check that "Bookmarks Toolbar Items" is on the Bookmarks Toolbar
• if "Bookmarks Toolbar Items" is not on the Bookmarks Toolbar then drag it back from the Customize palette to the Customize page to the Bookmarks Toolbar

• if missing items are in the Customize palette then drag them back from the Customize page to the toolbar
• if you do not see an item on a toolbar and in the Customize palette then click Restore Defaults in the Customize palette window to restore the default toolbar set.

• https://support.mozilla.org/en-US/kb/customize-firefox-controls-buttons-and-toolbars