Remove duplicate rows from a CSV

Common questions

What counts as a duplicate row?

A row where every single column matches another row exactly. If even one value differs, both rows are kept.

Which copy of a duplicate is kept?

The first occurrence in the file is kept, and later exact repeats are the ones removed.

Can I remove duplicates based on just one column, like an ID or email?

Not in this tool — it checks the full row. If you only need certain columns compared, use Select CSV Columns first to trim the file down to those columns, then run this tool.