CSV Validator

Validate CSV file structure and data integrity. Check for formatting errors, missing fields, and data consistency.

Validate CSV file structure and data integrity with comprehensive error detection. Perfect for data quality assurance and debugging CSV formatting issues.

✓ Comprehensive CSV structure validation

✓ Data integrity and consistency checks

✓ Detailed error reporting with line numbers

✓ File upload and text input support

✓ Custom validation rules

✓ Export validation reports

✓ No registration required

✓ Completely free

✓ Works in your browser

Enter CSV data:

Validation Options

First row is header

Check for empty fields

Check column consistency

Check for duplicate rows

Validate data types

Strict quote validation

How to Use

Choose your input method: paste CSV data or upload a CSV file
Configure validation options based on your requirements
Click Validate CSV to run comprehensive checks
Review the validation report showing errors, warnings, and statistics
Copy the validation report for documentation or sharing

Frequently Asked Questions

What types of errors does the validator detect?

The validator checks for structural issues, missing data, inconsistent column counts, data type mismatches, duplicate rows, and quote formatting problems.

What is the difference between errors and warnings?

Errors are critical issues that make the CSV invalid or unusable. Warnings are potential issues that might cause problems but do not break the file format.

Can I validate large CSV files?

Yes, files up to 10MB are supported. For larger files, consider validating smaller sections or using the text input method.

Is my data stored or transmitted?

No, all validation happens in your browser. Your data never leaves your device, ensuring complete privacy and security.