Upload a CSV or JSON file to validate
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Validate data integrity and check for errors with comprehensive validation rules
Upload a CSV or JSON file to validate
Select a file • Max 50MB
Data validation is the process of checking data quality and accuracy against predefined rules. It ensures your datasets don't contain errors like missing values, invalid formats (e.g., bad emails), or out-of-range numbers before you use them for analysis or import.
You can apply 9 different types of rules to any column: Required (non-empty), Email check, Phone number check, Number validation, Date format check, URL validation, Text Length limits, Numeric Range limits, and Custom Regex patterns.
Yes! You can use the 'Regex' rule type to define your own custom regular expressions. This allows you to validate specific formats like SKUs, ID cards, product codes, or any other structured text.
After running validation, the tool provides a detailed report showing the total pass rate, number of valid/invalid rows, and a complete list of specific errors and warnings for each row and column.
Yes, you can download the full validation report as a text file or copy it directly to your clipboard. The report includes summary statistics and itemized errors.
Completely private. The Data Validator runs entirely in your web browser using JavaScript. No file is ever uploaded to a server, so your sensitive data remains on your device.