Microsoft Presidio
by Microsoft
Context-aware PII detection and anonymization
Presidio provides fast identification and anonymization of PII in text and images. Uses NER, regex, and custom recognizers to detect sensitive data with high accuracy.
🎯 Key Features
50+ PII entity types
Multi-language support (20+ languages)
Custom recognizer creation
Anonymization/pseudonymization
Image redaction
Structured data support
Context-aware detection
Confidence scoring
De-identification
Re-identification support
Strengths
Excellent PII detection accuracy
Multi-language support
Image redaction capabilities
Fast performance
Microsoft backing
Production-ready
Extensive entity coverage
Limitations
Focused only on PII
No prompt injection detection
Requires tuning for domain-specific PII
Limited to text/image
No built-in LLM integration
Best For
- PII anonymization
- Data privacy compliance
- Healthcare applications
- Financial services
- HR systems
- Legal document processing