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In Firefox 3, the Location Bar received a number of improvements. Among those improvements was the move to a XUL richlistbox widget for the auto-complete dropdown. This allowed styled URL/title information, favicons, and highlighted match information. This preference determines how many entries should appear (at most) in the dropdown.

Possible values and their effects

A non-negative integer corresponding to the maximum number of entries that can appear in the Location Bar auto-complete dropdown. Default is 12.


  • This preference is read when a browser window first opens, so the effects of changing its value won’t be seen until a new window opens or until the browser restarts.
  • Setting the preference to 0 effectively disables the Location Bar dropdown entirely.

First checked in

2007-11-29 by Seth Spitzer

Has an effect in

  • Mozilla Firefox (nightly builds after 2007-11-29)

Related bugs

Related preferences

External links