CSV Duplicate Remover

Remove duplicate rows from a CSV, matching on the whole row or a single column (like email), keeping the first occurrence. Runs in your browser.

Runs in your browser — your file never leaves your device

Frequently asked questions

Is CSV Duplicate Remover free to use?

Yes — CSV Duplicate Remover is completely free with no limits, no watermarks and no sign-up. It runs in your browser, so there is nothing to pay for.

Are my files uploaded or stored anywhere?

No. This tool does all its work locally in your browser using your own device's power. Your files never leave your device and we never see them.

Do I need to install anything or create an account?

No installation and no account needed. CSV Duplicate Remover works on any modern browser — Windows, Mac, Linux, Android and iPhone.

How do I use CSV Duplicate Remover?

Open the tool, add your file (or paste your content), adjust any options, then press “Remove duplicates”. Your result is ready to download in seconds.

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