How to use Remove Duplicates
- Select an Excel or CSV file.
- Choose to match on the whole row or a specific column.
- Download the de-duplicated file and see how many rows were removed.
Is it private?
Yes. Remove Duplicates runs 100% inside your web browser. Your files are never uploaded to a server, so even we can’t see them. That makes it a safe choice for sensitive spreadsheets, contracts, and personal documents.
Frequently asked questions
Can I dedupe by just one column?
Yes — pick a column like email or ID and only the first occurrence of each value is kept.
Is my list uploaded anywhere?
No, de-duplication runs on your own device.