plainfolder → Contacts → Remove duplicate contacts

Remove duplicate contacts from a VCF file

Find the people saved more than once in your .vcf or CSV files and fold them into one card each — by phone number and email, without losing any field.

No server processing No account No daily limits

About this conversion

Duplicates come from merging phones, restoring backups and syncing two accounts. Matching by name does not catch them — “Mom” and “Linda K.” are the same number — and matching phone numbers as text does not either, because one file writes (555) 201-4477 and another +15552014477. Here two cards are the same person when they share a phone number (compared by its last nine digits) or an email. Each group becomes one card with every phone, email, address and note from all of them; the other names are kept as “also saved as”.

Just want to look inside it?

The same tool without converting anything: open the file and read it.

The same contacts, any way out

The file is read once and stays open, so the format is picked at the end: the same list can leave here as XLSX, CSV, CSV for Google Contacts, CSV for Outlook or PDF. Before that you can search it, see which people are saved twice — the same number written as (555) 201-4477 in one file and +15552014477 in another counts as one — and fold the duplicates into a single card without losing any phone, address or note.

Questions

Are two different people with the same name merged?
No. A name alone never merges cards — two people called Peter are common. Only a shared number or email does.
Can I see what will be merged before saving?
Yes. Untick “merge duplicates” to see the original cards; each one that belongs to a group shows how many cards it has.
Does it work with CSV too?
Yes — Google and Outlook CSV, or your own list. Save the result as vCard, CSV for Google, CSV for Outlook (web and new, or classic) or Excel.

Related

VCF→CSVVCF→ExcelVCF→PDFCSV→VCFExcel→VCFVCF→Outlook