CSV Data Masking & PII Anonymization
Detect and mask sensitive data in your CSV files. HIPAA-friendly — files never leave your browser.
50+ PII Patterns
Auto-detect emails, SSNs, phone numbers, credit cards, and more
8 Masking Techniques
Substitution, redaction, pseudonymization, hashing, tokenization, and more
GDPR/HIPAA Mapping
Column-level compliance citations with downloadable audit report
1M+ Rows
Web Worker architecture handles large files without blocking the UI
Deterministic Seeding
Reproducible masking output for CI/CD and test environments
100% Private
All processing is client-side — your data never leaves your browser
Quick Start: Upload your CSV → configure masking per column → click Mask Data → download. Zero uploads. All processing is client-side.
Zero Uploads
Files stay in your browser
GDPR/HIPAA
Compliant by design
Auto-Detect
50+ PII patterns
Benchmark Performance
Real-world tested, production-ready
500K rows/sec
1.4GB file support