Private CSV deduplication

Remove Duplicate CSV Rows

Clean repeated records by complete row or selected identifiers such as email, customer ID, or SKU.

Your data stays in your browser. Files are processed locally and are never uploaded.

CSV inputOr choose a local file

You can also drop one compatible file anywhere in this dashed area.

Deduplicate records without changing order

The first occurrence is kept and later matches are removed. The header never participates in comparison.

Select every column for completely identical rows, or choose one or more columns for key-based cleanup.

The first occurrence remains in its original order.

Yes. Select one or more header columns as the comparison key.

No. The first row is always treated as headers.