Free CSV Cleaner
Remove blank rows, trim whitespace, normalize headers, and deduplicate CSV data instantly.
How to use CSV Cleaner
Remove blank rows, trim whitespace, normalize headers, and deduplicate CSV data instantly.
Frequently asked questions
What does the CSV Cleaner fix?
It removes empty rows and columns, trims leading/trailing whitespace from every cell, normalizes inconsistent line endings, and optionally removes duplicate rows.
Is my CSV data uploaded?
No. All cleaning happens locally in your browser — your data never leaves your device.
What file size can I process?
Files up to several MB work fine. Very large files (100MB+) may be slow depending on your device.
Will it change my column order?
No. Columns are always preserved in their original order.
Can I clean a pasted CSV instead of a file?
Yes. You can paste raw CSV text directly into the text area and download the cleaned result.
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