About Data Validator
Data Validator is a free, secure, browser-based tool designed to help data professionals validate their data
files quickly and efficiently. Our tool supports multiple file formats including CSV, JSON, Excel (.xlsx,
.xls), DAT, TXT, and TSV files.
All processing happens entirely in your web browser, ensuring your sensitive data never leaves your device.
This privacy-first approach makes Data Validator ideal for validating confidential business data, personal
information, or any sensitive datasets.
Key Features
- Multi-Format Support: Validate CSV, JSON, Excel, DAT, TXT, and TSV files
- Schema Validation: Automatically detect and validate data structure and types
- Field Validation: Apply custom rules including range checks, pattern matching, and
required fields
- Anomaly Detection: Identify statistical outliers, duplicate records, and missing values
- Smart Date Validation: Specialized validation for Date of Birth fields
- Custom Delimiters: Support for custom delimiters in DAT and TXT files
- Export Reports: Download validation results in JSON, CSV, or PDF format
- 100% Client-Side: Your data never leaves your browser
Professional Data Validation Made Simple
Data Validator is a powerful, free tool designed for data professionals who need to ensure data quality
before analysis. Whether you're working with customer data, financial records, or operational datasets, our
tool helps you identify issues quickly and efficiently.
Our three-tier validation system checks your data at multiple levels: schema validation ensures your data
structure is correct, field validation applies business rules to individual values, and anomaly detection
identifies statistical outliers and data quality issues that might otherwise go unnoticed.
With support for CSV, Excel, JSON, and other popular formats, Data Validator integrates seamlessly into your
existing workflow. All processing happens in your browser, ensuring your sensitive data remains private and
secure.
How It Works
- Upload Your File: Drag and drop or select your data file (up to 10MB)
- Select Delimiter: For DAT/TXT files, choose your delimiter (comma, tab, pipe, etc.)
- Automatic Validation: The tool performs three types of validation automatically
- Review Results: See detailed validation results with error descriptions and
recommendations
- Download Report: Export your validation report for documentation
Use Cases
Data Analysts: Quickly validate datasets before analysis to ensure data quality and
consistency.
Data Engineers: Test ETL pipeline outputs and validate data transformations.
Business Users: Verify data exports from CRM, ERP, or other business systems.
Developers: Validate API responses and test data before integration.
Privacy & Security
Your privacy is our top priority. Data Validator processes all files locally in your browser using modern
web technologies. No data is transmitted to our servers or any third-party services. When you close your
browser, all data is immediately discarded from memory.