Find contacts saved twice in a VCF backup and keep one of each, numbers combined
Processed in your browser. Nothing is uploaded. Checked against sources on 17 Oct 2026.A contacts backup restored twice, or synced from two accounts, leaves the same person in the list two or three times. Drop the .vcf here: contacts sharing a phone number, whether written +91 98765 43210 or 098765 43210, or an email in any case, are recognised as one person, and their extra numbers and emails are combined into the first copy. Photos and other fields are kept, and nothing is uploaded.
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Contacts end up in several .vcf files when you move between phones, export from Gmail and iCloud separately, or restore a backup on top of an existing list. Importing them all leaves the same person two or three times.
Matching chains: if one card shares a number with a second, and the second shares an email with a third, all three are one person. Numbers shorter than seven digits, such as 112, never match anything.
What happens to duplicates. With Combine ticked, the first copy of each person is kept exactly as it was, photo, birthday, notes and custom fields included, and every phone number and email the other copies add is written into it. Untick Combine to keep the first copy only. The page lists which names were merged before you download, so a wrong match can be spotted.
The rest of the article, and all 6 questions about Merge VCF Files, are on the Merge VCF Files page.
Drop both .vcf files on Merge VCF Files. Every contact is read, people saved in both are recognised by phone number or email, and the page says how many remain. Press Download and one .vcf holds everyone once, ready to import on a phone or in Gmail.
Two contacts are treated as one person when they share a phone number, compared on its digits so spaces, dashes and a leading +91 or 0 do not matter, or an email address in any case. Tick Same full name to also join contacts with exactly the same name.
No. The first copy of each person is kept as it was, with its photo, birthday, notes and any custom fields. Only phone numbers and emails that the other copies add are written into it. Untick Combine to keep the first copy without adding anything.
Yes. Select up to 500 .vcf files at once, or drop a whole batch on the page, and they become one file. Phones that export one file per contact can then be imported in a single step instead of hundreds.
Rates and rules change; check the source before you rely on a figure.
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Same job, other tools: Remove Duplicate Calendar Events – Clean an .ics export where the same event was saved several times, keeping the latest · Markdown to Plain Text – Strip every Markdown mark and keep the words.
On the related tools: Combine CSV Files – Stack monthly or per-store CSV exports into one file, with a column naming the source.