Deduplicate CSV
Remove duplicate rows from CSV
— Remove duplicate rows from CSV
Input
Output
Output will appear here
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About Deduplicate CSV
Removes duplicate rows from a CSV file, keeping only the first occurrence of each unique row. The header row is always preserved.
Use cases
- →Clean up exported data with accidental duplicate rows
- →Deduplicate mailing lists
- →Remove repeated log entries
- →Prepare clean data for import
FAQ
- Does it keep the header row?
- Yes — the first row is always treated as a header and preserved.
- Is comparison case-sensitive?
- Yes — "Alice" and "alice" are treated as different values.