Table Row Deduplicator
Paste a CSV or TSV table and keep the first row for each key.
A QUICK WALKTHROUGH
How to use this tool
- Paste up to 100,000 characters.
- Choose CSV or TSV, key columns, and matching options.
- Deduplicate and review the removed-row count.
First row preserved
Rows are compared by selected columns; the first matching row and its original spelling/order are retained.
Distinct table operation
This works on CSV or TSV records and does not deduplicate arbitrary text lines.
GOOD TO KNOW
Common questions
Are rows uploaded?
No. Processing runs locally in your browser.