On Mobile (iOS)
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Tap the “Settings” icon in the top-right corner of the “Home” tab.

- Tap “Font Size”.
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Drag the slider to adjust the font size.

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Review the message preview.

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Tap “Done”.

On Desktop (Windows & macOS)
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Click your profile picture.

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Click “Preferences”.

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Find the “Font Size” section.

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Drag the slider to adjust the font size.

- For quick resizing, press Ctrl +/- on Windows or Cmd +/- on macOS.
- The selected font size applies throughout the Zenzap app. Turn on “Use default text size” to return to your device’s default setting.