Free online duplicate remover

Paste a list or CSV (or open a .csv file). Everything runs in your browser — nothing is uploaded.

First line is a header Ignore case Ignore extra spaces Ignore accents Keep

Working in Google Sheets? The CleanRows add-on does this inside your sheet: highlight before deleting, add a status column, compare two sheets. See CleanRows →

How it works

Each line is split into columns (comma, semicolon or tab are detected). Rows are compared on the columns you tick, after optional normalisation. The kept row stays in its original position.

Guides: remove duplicates in Google Sheets · highlight duplicates · compare two sheets