As you launch the MacSonik CSV Duplicate Remover for Mac, you will find the screen displayed below
Tap to purchase the software.
Click to activate the software.
To know about the software
Tap for any assistance.Guide to eliminate Duplicate items from CSV files.
It will show you two options: Remove Duplicate Records from CSV File(s) and Remove Duplicate Contacts from VCF/vCard File(s).
You can click Add File or Add Folder option to add the required files. Locate the file and click Open.