Contacts · free, in your browser

Find and merge duplicate contacts

Import the contacts from your phone, Google or Outlook, let Contacts find the duplicates, and merge them so every phone number, e-mail and address is kept on one contact.

Clean up your contacts

How to do it

Import your contacts: a .vcf or a CSV export from your phone, Google or Outlook.
Choose Duplicates (or Find duplicates… in the command palette, Ctrl+K).
Check each group of matches. Merge one group, or Merge all.
Use Clean up to trim spaces, title-case names, lowercase e-mail addresses and remove empty fields.
Export the clean list as vCard or CSV and import it back where it came from.

Your files stay on this device: Contacts runs in your browser, with no upload, no account and no watermark.

Questions

How does it decide two contacts are the same?

They share a phone number (compared as digits, with your default country code), an e-mail address in any case, or the same name and organisation.

Will merging lose any details?

No phone number, e-mail, address or group is lost: a merge keeps all of them. Single fields such as the job title come from the fullest contact first.

Can I undo a merge?

Merges and bulk changes have no undo, so keep your original export file. An import itself can be undone from its message for a few seconds.

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