RotateDisplay

Rotate display of external monitor on macOS.

Usage

• Download and open RotateDisplay.applescript with Script Editor
• Modify parameter externalDisplay to your secondary monitor's name
• Click Run the Script to test
• Export as application, then you can rotate display by double click the app

FAQ

How to find my secondary monitor's name?

• Click 🍎 -> System Preferences... -> Displays
• The secondary monitor's name would appear on the title bar of popup window
  • like "Acer CB281HK" in the screenshot below: