From MozillaZine Knowledge Base
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)
- Bug 4821 - Full zooming not functional (images, objects as well as text) (page zoom like opera)
- Bug 389628 - Implement UI for full page zoom
- Bug 401322 - missing "Text Size" zoom feature, Full page zoom should be an option not replacement
- Bug 401221 - Provide finer control over zooming
- Bug 621823 - Zoom levels in toolkit.zoomManager.zoomValues are always reset (SeaMonkey)