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Firefox zoom on Mac OSX not working

 

By default the "pinch open" and "close zoom" options are not working in Firefox on OSX. It's not difficult to enable these settings, if you know how to do it...

Open Firefox
Go to a new tab, type in "about:config" and hit <Enter>.
Click the “I’ll be careful, I promise!” button.
You can now modify the related browser.gesture preferences by changing the values as stated below:

  • 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

Once you have changed the preferences, close the tab and the new settings should work.
You might want to restart Firefox!?

 

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