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100% FreeClient-sideNo Watermark

CSV Cleaner — Remove Duplicates, Trim & Split Columns, Free

Clean messy CSV files instantly. Remove duplicate rows, trim whitespace, split or merge columns, and fix encoding. 100% free, no watermark, all processing in your browser.

Files never uploadedSupports CSV & TSVInstant processing
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How to Clean a CSV File

1

Upload your CSV file

Drag and drop a CSV or TSV file, or click to browse. The file is parsed instantly in your browser.

2

Choose cleaning operations

Select from options like remove duplicates, trim whitespace, delete empty rows, or remove specific columns.

3

Download cleaned CSV

Preview the cleaned data and click Download to save the result as a CSV file.

Frequently Asked Questions

Is the CSV Cleaner free?

Yes, 100% free. No hidden costs, no account needed, no watermarks.

Are my files safe?

Files never leave your browser. All processing uses JavaScript running locally on your device.

What delimiters are supported?

Comma (CSV), tab (TSV), semicolon, and pipe delimiters are auto-detected or can be set manually.

Can I remove specific columns?

Yes. After uploading, you can select which columns to keep or remove before downloading.

Is there a row limit?

There is no hard limit. Performance depends on your device — most handle tens of thousands of rows easily.

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