PII Redactor - Sensitive Data Masker

PII Redactor is a privacy tool that masks personally identifiable information (PII) in text before sharing, publishing, or analyzing it. It uses regex patterns to find and replace sensitive data — emails, phone numbers, SSNs, credit card numbers, and IP addresses — with a placeholder you choose. This is essential when sharing logs or data with third parties, preparing documents for public release, or anonymizing datasets for training or testing.

Each built-in detector uses carefully tuned regex patterns to match real PII while minimizing false positives. Custom patterns let you add domain-specific identifiers (employee IDs, customer numbers, etc.). The tool processes the entire text in one pass, replacing all matches with your chosen placeholder string.