Validate CSV files online — find missing values, cells that break their column's type, duplicate headers, and mojibake left by a bad export.
Free for files up to 5 MB and 10,000 rows. Files are processed in your
browser — nothing is uploaded to a server. No account required.
About CSV Validator
CSV Validator checks your data for common issues: missing values, type mismatches, and encoding problems.
Catch errors before they cause downstream issues in your ETL pipeline, database import, or reporting dashboard. Get a clear summary of issues with row-level detail.
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