CSV Validator — Check Your CSV File for Errors
Validate your CSV file for structure errors, encoding issues, missing headers, inconsistent columns, and more.
Frequently Asked Questions
The validator checks: consistent column count across all rows, duplicate header names, empty header names, valid UTF-8 encoding in every cell, completely empty rows, and cells that start with =, +, -, or @ which are potential formula injection risks.
Errors indicate structural problems that will likely cause data import failures, such as rows with the wrong number of columns. Warnings flag potential issues that may or may not be problems depending on your use case, such as empty cells or formula injection risks.
No. The validator is read-only. It reports problems but does not modify your file. Use the CSV Repair Tool to fix structural errors automatically.
Validation checks common structural issues but cannot check application-specific rules like required fields, data type constraints, or value ranges. After structural validation passes, check your target application for its specific import requirements.
Click the "Fix These Errors with CSV Repair Tool" button shown after a failed validation. The Repair Tool will automatically fix most structural errors. For data-specific issues, use the editable preview table in the Repair Tool to manually correct values.
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