Data Validator
Validate CSV & Excel files before import. Check schema rules, data types, and get row-level error reports.
Required Fields
Data Types (18)
Length Constraints
Value Ranges
Regex Patterns
Enum Lists
Uniqueness Checks
CRM Presets
How It Works: Choose validation rules (CRM presets or auto-detect) → Validate in-browser at ~1M rows/sec → Get import confidence score with row-level errors → Export clean or failed data. Privacy first: All processing happens locally in your browser. No uploads. No servers. Processing stays on your device.
No file? Try it instantly with synthetic sample data.