CSV (Comma-Separated Values) is a simple file format for storing tabular data. Each line is a row, and values are separated by commas. It's widely used for data export/import in Excel, databases, and analytics tools. For structured or nested data, JSON is another popular interchange format.
What does this validator check?
The validator parses your CSV and checks for consistent column counts across all rows. It will flag rows that have more or fewer columns than the header row.
How do I handle quoted values with commas?
Wrap values containing commas in double quotes: "New York, NY". The parser automatically handles quoted fields correctly.
Is my CSV data uploaded anywhere to be parsed?
No. CSV parsing and conversion run entirely in your browser, so rows that may contain personal data, exports, or analytics never leave your device. Everything stays client-side and works offline after loading.
