CSV Deduplicator
Remove duplicate rows from a CSV based on select columns or full matching. Fast, free, and fully client-side.
Input source
Result / Output
How the CSV Deduplicator Works
Removes duplicate records from CSV files based on all columns or specific key identifier columns (such as Email or ID).
Usage Example
Deduplicates mailing lists and customer databases in seconds.
Frequently Asked Questions
Can I deduplicate based on a single specific column?
Yes, choose specific primary key columns to identify and remove duplicates.
Browse more
See all CSV tools.