How to increase the text size on a MacBook

You can adjust the text size for specific apps. Follow the above steps 1 through 4 and you’ll see underneath the slider there’s a list of apps. Next to each app, there’s an option to either keep the preferred size (which is the size you’ve set above) or customise each one, as shown here.

The steps are slightly different if you’re on an older version of macOS. Before we start, it’s worth mentioning that if your MacBook is still supported by Apple then we’d recommend updating to the latest macOS Sonoma, as this will include important security updates. 

Otherwise, to increase the text size on an older macOS you’ll need to use your keyboard. Open up the app and hold down the Command and plus keys simultaneously. If you make the text too big then don’t worry, just hold down the Command and minus keys to decrease the size. 

This only works in apps such as Mail, Messages, News and Safari.