Mac OS: Delete duplicates in the address book

Duplicates in the address book under Mac OS occur very quickly. In order to have a clear address book, you should delete it regularly. We show you how this works in this guide.

Delete duplicates in the address book on Mac OS

1. Open the Contacts app, which stores the addresses on your Mac.
2. Click on the "Business card" tab.
3. When you click on the "Search for duplicates" function, a window opens and the Mac indicates with a loading bar that it is looking for duplicate entries.
4. When finished, your Mac will show you how many duplicate business cards or entries it has found. You can then merge the business cards.
5. Note: Unfortunately, there is no way to display the duplicate entries and business cards before merging them in the address book.