How to use the Remove Duplicates by Column converter
- Drop or paste your CSV.
- Type the column to check for duplicates.
- Click Convert and download the deduplicated file.
What to know
- The first row with each value is kept, and later rows with the same value are removed.
- With ignore case on, ANA@example.com and ana@example.com count as the same.
Questions
Is my mailing list safe?
Yes. The list is processed in your browser and is never uploaded.