Interactive Playground
Try Sensitive Data Detection
Type or paste any text and watch FastPII detect, redact, mask, or hash sensitive information in real time. No sign-up required.
Interactive Playground
See FastPII detect and protect European PII in real time
Paste sensitive text, switch protection modes, and generate implementation-ready snippets for your stack.
Live
Input407 chars
Detect Output
NÁJEMNÍ SMLOUVA Pronajímatel: Jan Novák Rodné číslo: 800101/1238 Adresa: Vinohradská 1523/45, 120 00 Praha 2 E-mail: jan.novak@email.cz Telefon: +420 777 123 456 Nájemce: Petra Svobodová Rodné číslo: 885315/4326 Adresa: Dlouhá 24, 602 00 Brno E-mail: petra.svobodova@email.cz Telefon: +420 604 555 444 Nájemné bude hrazeno na účet: 123456789/0800 Datum nastěhování: 01.08.2026 Datum ukončení: 31.07.2027
NÁJEMNÍ SMLOUVA Pronajímatel: Jan Novák Rodné číslo: 800101/1238 Adresa: Vinohradská 1523/45, 120 00 Praha 2 E-mail: jan.novak@email.cz Telefon: +420 777 123 456 Nájemce: Petra Svobodová Rodné číslo: 885315/4326 Adresa: Dlouhá 24, 602 00 Brno E-mail: petra.svobodova@email.cz Telefon: +420 604 555 444 Nájemné bude hrazeno na účet: 123456789/0800 Datum nastěhování: 01.08.2026 Datum ukončení: 31.07.2027
Detected Entities
Entities will appear here as you type.
0 entitiesDetectionBFF connected407 chars outputFastPII v1.0
Why FastPII Playground
Explore Detection Capabilities
Test against real Czech, German, French, and Polish documents with deterministic, checksum-validated detection.
Real-time Detection
Identify 30+ types of European PII instantly, with checksum validation for official identifiers.
Client-side + API
Run detection in the browser or call the REST API. Same results, same accuracy.
Sample Texts
Try real European documents - rental agreements, business forms, medical notes.
API Reference
Full documentation for Python SDK, REST API, and cURL integration.
Ready to integrate?
Start detecting PII in your application with our open-source SDK or managed platform.