Remove Duplicate CSV Rows

Clean repeated CSV records without uploading or storing your data.

CSV input

Maximum file size: 10 MB.

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Cleaned CSV

Download CSV

About the Remove Duplicate CSV Rows

Keep the first occurrence of repeated records and export a smaller CSV file.

How to use it

  1. Paste CSV or select a local file.
  2. Choose full-row or single-column comparison.
  3. Remove duplicates, then copy or download the cleaned data.

How matching works

Full-row mode compares every parsed field. Column mode compares only the selected one-based column while preserving the complete first matching row.

Example

A contact export containing the same email twice can keep the first record by comparing the email column.

Notes

Comparison is exact and case-sensitive. Quoted delimiters and multiline fields are parsed before rows are compared.