CSV Validator
Drop a .csv file here, or
ready
CSV Validator
Catch malformed rows in a CSV (Comma-Separated Values) file before they break a downstream pipeline. The validator reports parser errors (unclosed quotes, mid-field newlines without quotes) and shape errors (rows with too few or too many fields relative to the header), each with a row number.
— S., [email protected]
What gets flagged
- Quote errors — an opening
"without a matching close, or a quote in the middle of an unquoted field. - Field-count mismatches — rows that have more or fewer columns than the header row.
- Encoding noise — UTF-8 BOMs and stray nulls (reported by the underlying parser).
What gets accepted
The validator follows RFC 4180 with the common pragmatic relaxations: any of , \t ; | are accepted as delimiter (auto-detected), CRLF and LF line endings, optional UTF-8 BOM, and embedded newlines inside quoted fields.
Privacy
100% client-side. No upload. See the privacy policy.