Spreadsheet tool · runs in your browser
Clean data
Tidy a messy spreadsheet in seconds: remove duplicate and empty rows, trim spaces, fix text case and find & replace, with a live preview.
- No uploads
- Free
- No sign-up
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Good to know
- Tick key columns to find duplicates by, say, email address only.
- The report shows exactly what changed before you download.
- Your original file is never changed.
Questions & answers
Will cleaning change my original file?
No. You download a new, cleaned copy; the original stays exactly as it was.
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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