01
Choose one file
Choose a CSV or VCF contact export from your device.
Contact Tools
Contact Duplicate Finder
Review exact duplicate contact signals before deciding whether to merge anyone.
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Data handling
Storage and export controls
- Retention
- The tool's working state is kept only while this page is open. Inputs and results are not saved to persistent storage by Got A Tool.
- Export
- The tool may prepare a result after you run it. It downloads or copies it only when you choose that action.
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How it works
Review duplicate contacts before anyone is merged
02
Review exact matches
Groups use the same normalized phone number or email only.
03
Keep all by default
Select Merge only for contacts you have reviewed.
Will it merge people automatically?
No. Every group starts with Keep all. You must select Merge for each group separately.
What makes a duplicate group?
Only an exact normalized email address or phone number. Similar names are never guessed.
Why are different names highlighted?
A shared household or office phone does not prove two contacts are the same person. The warning helps prevent accidental deletion.
What happens when I merge?
The merged contact keeps all distinct emails, phones, labels, addresses, and preserved fields from the selected group.
Are contacts uploaded?
No. Reading, grouping, reviewing, and export all run locally in your browser.
Practical guide
Read the Contact-sharing checklist
Decide whether the next step is a transfer or a share, remove only the contact fields you selected, and inspect the downloaded copy before you send it.
Open the guide →Keep working
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