You can look at this extension:

• Bookmarks Deiconizer: https://addons.mozilla.org/firefox/addon/bookmarks-deiconizer/

Or you can go the other way and keep icons you are familiar with, or are obvious, and delete names - right click, select properties and delete name.

This is the same way you shorten names This is what I do. Looks better, too.

If you remove the names then you may have a problem with organizing or searching for bookmarks.

If you do not want to use the extension then you can achieve the same effect with code in userChrome.css
That is what I would do.

Add code to userChrome.css below the @namespace line.

• http://kb.mozillazine.org/userChrome.css

@namespace url("http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"); /* only needed once */
#personal-bookmarks .toolbarbutton-icon { display:none !important;}

• http://kb.mozillazine.org/Editing_configuration
• ChromEdit Plus: http://webdesigns.ms11.net/chromeditp.html

I bow to your very obvious technical expertise and hundreds(thousands?) of best replies but I've never had any problems in some years in the way I work.

I'm not sure why you would need to organize or search for bookmarks that are right in front of you - the point of the Bookmarks Toolbar, surely. Looks better, too.

A couple of afterthoughts. I presume you are shortening names e.g. New York Times to NYTimes or NYT.

I've also found it very helpful on the Toolbar to establish folders for related or similar bookmarks e.g."Mozilla" or "US Media". You can open the folder and select particular bookmarks or open them all in tabs.

There is a lot you can do without deleting Names or Icons to make a lot of space on the Bookmarks Toolbar.

The deiconizer worked great, thanks!