Clamper

CSS scaling in your menubar

Only for Mac

Free

Mac

Clamper is a lil’ clamp app to fill the responsive gap. It lives in your menu bar so you can scale your website quick. - Set your minimum and maximum screen width. - Set your minimum and maximum font or object sizes. - Swap between REMs and Pixels on the fly with the calculations done for you. - Generate a responsive friendly clamp calculation for the browser right to your clipboard.

  • This app hasn’t received enough ratings or reviews to display an overview.

• Improved stability and performance • Enhanced About window with better information • Updated for App Store compliance • REM values now round to the nearest 1000th instead of the nearest 100th • Show in dock setting now works properly

The developer, Devin Fountain, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Not Collected

    The developer does not collect any data from this app.

    Privacy practices may vary, for example, based on the features you use or your age. Learn More

    The developer has not yet indicated which accessibility features this app supports. Learn More

    • Seller
      • Devin Fountain
    • Size
      • 7.8 MB
    • Category
      • Utilities
    • Compatibility
      Requires macOS 15.0 or later.
      • Mac
        Requires macOS 15.0 or later.
    • Languages
      • English
    • Age Rating
      4+
    • Copyright
      • © 2026 Devin Fountain