How do I change the zoom increment that is used by Firefox whenever I zoom-in or zoom-out of webpages?
I find that the default zoom increment is a bit too big for my taste.
You can do this as follows (I tried it with Firefox 10.0.2 here):
about:configin the address bar
This will show you the various zoom "steps" the browser has. The steps are specified as decimal numbers (representing precentages of the original, so .3 means 30% of original), separated by a
,. See Tweak Firefox 3 full page zoom for the details.