Spreadsheet tool · runs in your browser
Remove duplicates from Excel & CSV
Find and delete duplicate rows in Excel or CSV files, comparing whole rows or just the columns you choose, like email or ID.
- No uploads
- Free
- No sign-up
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Good to know
- Tick key columns (like Email) to treat rows with the same email as duplicates.
- “Ignore upper/lower case” catches “Ali” vs “ali”.
- The first occurrence of each row is kept.
Questions & answers
Which duplicate is kept?
The first occurrence is kept and later copies are removed, so the original order of your data is preserved.
Is it really free?
Yes. Every Feemag tool is free, with no sign-up, no watermarks added by us and no daily limits.
Are my files uploaded anywhere?
No. Your files are processed by your own browser on your device and never uploaded to a server. That also makes it fast, even on big files.
Does it work on my phone?
Yes: in any modern browser (Chrome, Safari, Edge or Firefox) on iPhone, Android, Mac, Windows and Linux.
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