CSV Tools
CSV Validator
Check CSV for structural issues, ragged rows, and encoding problems.
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What is CSV Validator?
Scans CSV data for common structural problems: inconsistent column counts (ragged rows), duplicate headers, empty rows, and encoding issues.
How it works
Parse CSV with a RFC 4180 parser, then check each row for consistent column count, check headers for duplicates, and scan for encoding issues.
- Paste CSV. Paste CSV data to validate.
- Review issues. Errors and warnings are listed with row numbers and descriptions.
Examples
Ragged rows
A CSV with 3 columns in the header but 4 in row 5 flags a warning.
Common mistakes
Hidden characters
BOM characters at the start of a file can cause parsing issues — the Validator detects them.
Alternatives
CSV Formatter
For fixing rather than just detecting issues.
Frequently asked questions
Can it auto-fix issues?
No — use CSV Formatter for fixes and CSV Deduplicator for duplicates.