Enabling Zoom on macOS

At WLPC in 2018, I presented on packet analysis, or spectrum analysis, or something... but nobody cared, because during the presentation, I used the keyboard zoom feature in macOS to zoom in on areas of interest during live demos. That really grabbed a lot of people's attention! I've received a lot of questions about how I do it, so here's how!

1. Open System Preferences (the fastest way is to press command + space, type Preferences, and hit enter)
2. Open Accessibility
3. Go to Zoom
4. Check Use scroll gesture with modifier keys to zoom
5. To zoom in: Hold down the control button, and scroll down either using two-finger scroll on your trackpad, one-finger scroll on your magic mouse, or scroll with whatever mouse you have
6. To zoom out: Hold down the control button, and scroll up


  1. Very cool. Thanks for the tip! :-)

  2. This & when you turned me on to using my iPad as a remote for Keynote to preview, control the show and annotate has change my presentation life!!!


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