Remove CSV duplicates
Every row, just once.
Choose files
Drop your files here.
Drag files here, or choose them from your device.
CSV · 50 MB totalYour files stay yours.
A little guidance
How to use this tool
- Choose CSV from your device. Keep the total below 50 MB.
- Review your files and adjust the settings.
- Select “Remove duplicates” and download the finished result.
Formats and limitations
Removes exact duplicate data rows, keeps the first row as a header, and preserves the first occurrence. Formula-like values are escaped.
Your originals are unchanged. Results are removed from this page when you leave or reload it.
Questions about this tool
Which files can I use?
CSV. Removes exact duplicate data rows, keeps the first row as a header, and preserves the first occurrence. Formula-like values are escaped.
Are my files uploaded?
Files are processed on your device. Their contents are not uploaded to a processing server.
Is this tool free?
Yes. This tool is free to use within the limits shown on this page.
