Prompt PII Redactor

Strip personally-identifiable information from text before sending to an LLM. Pattern-based detection of emails, phone numbers, US SSN, credit cards, IP addresses, and (heuristic) names. Browser-only — your sensitive data never leaves the page.

How to use the Prompt PII Redactor

Paste text. Toggle which categories to detect. Replacement mode: placeholders preserve type ([EMAIL]); hash preserves identity (same value redacts to same hash — useful if you need to correlate without exposing the raw value); REDACTED is the most opaque.

Pattern-based PII detection is limited — it catches most well-formatted data but misses creative variants. For high-stakes redaction, use Microsoft Presidio or AWS Comprehend Medical instead.