CSV validator
Check a CSV for consistency: constant column count and well-formed rows.
🔒 100% client-side — no data sent
Validate a CSV file and detect malformed rows: inconsistent column count, unclosed quotes, wrong delimiter. Our online CSV validator points out the problematic rows. 100% browser-based, so your file never leaves your computer.
What is it for?
- ▸ Check an export before importing into a database or CRM.
- ▸ Verify a customer/product file before a campaign or catalog.
- ▸ Spot the rows that break a data ingestion pipeline.
- ▸ Validate a spreadsheet-generated CSV before sharing it.
FAQ
What CSV errors does the tool detect?
It flags rows whose column count differs from the header, unclosed quotes, and delimiter issues, indicating the affected row.
Does the tool handle commas and semicolons?
Yes. CSV can use a comma, semicolon, or tab as delimiter; the tool adapts to the detected or selected separator.
How are fields containing a comma handled?
A field containing the delimiter must be wrapped in double quotes. An internal quote is doubled. The validator flags mismatched quotes.
Is my CSV file sent anywhere?
No. Parsing happens entirely in your browser. No row is sent to a server, ideal for sensitive data.