CSV Duplicate Row Remover
Detect duplicates by the columns you choose, review the counts, and keep either the first or the last occurrence.
Remove duplicate rows
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Drop your CSV file here, or browse files
CSV, TSV or text file · any delimiter · UTF-8 or legacy encodings
Columns that define a duplicate
Data rows0
Duplicate groups0
Rows removed0
Rows left0
Most repeated
| Value | Times | Rows (original numbers) |
|---|
Result preview
Output file options
How to use it
- Choose your CSV and tick the columns that decide whether two rows are duplicates.
- Review the counts and the most repeated values. Decide whether to keep the first or last row.
- Download the result.
Examples
- Compare only the
emailcolumn to keep one row per address. - Turn off case sensitivity so
[email protected]and[email protected]match.
Row order is preserved, and only the extra copies are removed. The header row is never removed. Comparison is Unicode-normalized, so visually identical accented letters match.