Enable Firefox zoom on Mac OSX

Do you want to use the “Pinch to zoom” gesture to work on Firefox, and you don’t know “how to”? Don’t worry it is really very easy to enable this “zoom function” within Firefox on a Mac!

  • Open Firefox
  • Go to a new tab
  • Type about:config
  • Next hit enter
  • Click the “I’ll be careful, I promise!” button

Now search and modify the related browser.gesture preferences:

  • browser.gesture.pinch.in -> cmd_fullZoomReduce
  • browser.gesture.pinch.in.shift -> cmd_fullZoomReset
  • browser.gesture.pinch.out -> cmd_fullZoomEnlarge
  • browser.gesture.pinch.out.shift -> cmd_fullZoomReset
  • browser.gesture.pinch.latched -> false