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. You can also use our Diff tool to compare two CSV files side by side.
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 data secure?
Yes, all parsing happens locally in your browser. Your data never leaves your device or gets sent to any server.
