What counts as an empty row?

A row is considered empty if every cell in that row is blank or contains only whitespace characters.

Does it preserve my delimiter?

Yes. The tool auto-detects your delimiter (comma, semicolon, tab, or pipe) and preserves it in the output file.

Will it modify my header row?

The header row is never removed, but if 'Trim whitespace' is enabled, leading and trailing spaces in header cells will be trimmed.

CSV Cleaner

Clean CSV files by removing empty rows, trimming whitespace, and fixing common formatting issues. Fewer import errors. Auto-detects delimiters (comma, semicolon, tab, pipe). All processing happens in your browser — your data never leaves your device.

Drop files here or click to browse

Supports .CSV (up to 20 files)

Your files are processed entirely in your browser. Nothing is uploaded to any server.

How to Use CSV Cleaner

1
Upload your data file
Drag and drop your CSV, JSON, or data file into the upload area.
2
Configure the transformation
Set delimiters, choose columns, or select the output format for your data.
3
Download the result
Click download to save the cleaned or converted data file. Processing runs locally in your browser.

Frequently Asked Questions

Next Steps

Remove duplicate rows

Convert clean CSV to JSON

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