Bookmark separators in Firefox

Firefox is the one major browser with bookmark separators built in. Right click an empty spot on the Bookmarks Toolbar, choose New Separator, and a thin divider appears. It is a plain gray line with no color or icon, but it needs no tool at all. Here is how to add one, what to expect from it, and what to reach for when you want color.

Add a separator in Firefox

1. Show the toolbar if it is hidden: press Ctrl + Shift + B (Cmd + Shift + B on a Mac).
2. Right click an empty spot on the Bookmarks Toolbar.
3. Choose New Separator.
4. Drag the separator along the toolbar to where you want the divide.

You can also manage separators from the Library: press Ctrl + Shift + O (Cmd + Shift + O on a Mac), pick the folder, and add separators from the Organize menu. To remove one, right click it and choose Delete.

What you get, and what you do not

The built-in separator is a thin line, and that is the whole feature. On the toolbar it shows as a short vertical divider; inside menus and folders it becomes a horizontal rule. There is no color, no icon, and no way to tell one separator from another. If your groups are few and a faint line is enough, it does the job with zero setup.

Oddly, Chrome gives you nothing like this. It draws one built-in divider of its own on the bookmarks bar, but there is no way to add more.

When you want color

A separator does more than divide: pick colors deliberately and you can color-code your groups, so you can spot the right one without reading. That is what Diviide makes. The catch is that Diviide's colors rely on how Chromium browsers save a bookmark's icon, and Firefox handles icons differently, so a dragged separator usually loses its color there. The details are in how Diviide works in Safari and Firefox.

So the honest advice is: for plain dividers in Firefox, use the built-in separator above. For separators that keep their color, use a Chromium browser like Chrome, Edge, Brave, or Arc, and see how to add bookmark separators.

Common questions

Does Firefox have bookmark separators?

Yes, built in. Right click an empty spot on the Bookmarks Toolbar and choose New Separator. Firefox adds a thin divider you can drag into place like any bookmark.

Can I change the color of a Firefox separator?

No. The built-in separator is a plain thin line with no color or icon, and Firefox has no setting to change how it looks.

Does Diviide work in Firefox?

Not fully. Firefox fetches a bookmark icon differently, so a dragged Diviide separator usually shows a plain or blank icon instead of the one you picked. For separators that keep their color, use a Chromium browser like Chrome, Edge, Brave, or Arc.