CSV Format Validator
Ensure your CSV files are perfectly formatted, properly delimited, and ready for database import.
Input CSV Data
Validation Log
How To Use
Paste or Upload: Enter your CSV data into the left box or click "Upload CSV" to select a file from your computer.
Select Delimiter: The tool auto-detects standard delimiters, but you can manually choose Comma, Semicolon, Tab, or Pipe.
Validate: Click "Validate CSV". The tool will check for column count mismatches, blank lines, and unbalanced quotes.
Why Use This Tool?
Prevent Import Failures: Find broken formatting before you import data into SQL databases, Excel, or third-party CRMs.
Detailed Error Logs: Get exact line numbers showing where the column count drops or where quotes are missing.
100% Offline Privacy: Large CSV files containing sensitive customer data are processed securely in your browser. Nothing is uploaded.
Frequently Asked Questions
What errors does this validator catch?
It detects: 1) Inconsistent column counts (e.g., Row 1 has 5 columns, Row 4 has 4 columns). 2) Unbalanced quotation marks (a quote was opened but never closed). 3) Empty or blank rows in the middle of your dataset.
Can it handle commas inside quotes?
Yes! Our advanced custom parser accurately reads fields wrapped in double quotes (e.g., "Smith, John") and treats them as a single column, exactly like Excel or SQL databases do.
Is there a file size limit?
Since the processing happens entirely on your local machine (browser), there are no hard limits. However, pasting files larger than 10MB directly into the text area might slow down your browser. Using the "Upload CSV" button is recommended for larger files.