How to Merge and Remove Duplicate Contacts in macOS and iCloud

If you've been maintaining and migrating the same Contacts list across Macs over the years then you've probably come across your fair share of duplicate contact cards. They can also appear seemingly out of nowhere after setting up iCloud Contacts on your Mac for the first time.Unless you intentionally keep certain information for the same contact separated out for whatever reason, duplicate cards will add nothing but irritation to your day, so here we're going to show you how to merge and/or rem