From MozillaZine Knowledge Base
Jump to navigationJump to search


Gecko 1.9 implements full-page zooming. Mozilla Firefox exposes this functionality in the user interface through the “View → Zoom” menu and allows zooming by holding down “Ctrl” and pressing + or - or by scrolling the mousewheel up and down. The zoom levels that the user can change to are limited to the ones specified in this preference.

This preference was previously named toolkit.zoomManager.fullZoomValues.

Possible values and their effects

A list of comma-separated numbers, representing the zoom levels as multipliers that the user can use on content. Default value is .3,.5,.67,.8,.9,1,1.1,1.2,1.33,1.5,1.7,2,2.4,3 (zoom levels of 30%, 50%, 67%, 80%, 90%, 100%, 110%, 120%, 133%, 150%, 170%, 200%, 240%, and 300%).

First checked in

2008-02-13 by Reed Loden (patch by Elmar Ludwig)

Has an effect in

  • Mozilla Firefox (nightly builds since 2008-02-13)
  • SeaMonkey (nightly builds since 2010-12-09, configurable since 2011-07-17)

Related bugs

Related preferences

External links