FireFox - Modify the default zoom levels

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Here's a simple tips to modify the default zoom levels (zoom-in/zoom-out) of Firefox.
  • Open Firefox.
  • In the address bar type the following command:
  • about:config
  • Click on the "I'll be careful, I promise..." button

For the Zoom in feature:
  • Look for the following entry: zoom.maxPercent
  • Double click to modify the value

For the Zoom out feature:
  • Look for the following entry: zoom.minPercent
  • Double click to modify the value

Jean-François Pillou

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