Supported Languages - Blindfold

Blindfold’s AI-powered detection engine supports PII detection across multiple languages with varying levels of performance.

Native Language Support (Highest Accuracy)

These languages have been specifically trained for PII detection and provide the best accuracy:

English

Primary language with highest accuracy

German

Full support, excellent accuracy

French

Full support, excellent accuracy

Spanish

Full support, excellent accuracy

Italian

Full support, excellent accuracy

Portuguese

Full support, excellent accuracy

Dutch

Full support, excellent accuracy

Polish

Full support, excellent accuracy

Russian

Strong support, good accuracy

Zero-Shot Language Support (High Accuracy)

These languages work through our multilingual detection engine without specific training, achieving excellent results:

Czech

Works great (similar to Polish/Russian)

Slovak

Strong performance

Danish

Good performance

Swedish

Good performance

Norwegian

Good performance

Romanian

Good performance

Experimental Support

These languages are supported but may require additional validation for production use:

Chinese - Supported, but PII patterns differ significantly
Japanese - Supported, but PII patterns differ significantly
Arabic - Supported with testing recommended

Automatic Language Detection

The detection engine automatically identifies the language - no configuration needed.

# Mix multiple languages in one request
response = client.tokenize(
    "Contact: John Doe, Email: john@example.com, Teléfono: +34 912 345 678"
)
# Automatically detects entities in both English and Spanish

// Works seamlessly across languages
const response = await client.tokenize(
  "Nome: Paolo Rossi, E-Mail: paolo@esempio.it, Osoba: Jan Novák"
);
// Detects Italian and Czech automatically

For best results, use one of the Native Language Support languages. Zero-shot languages work well but may have slightly lower confidence scores for complex entity types.

Language-Specific Examples

European Mix

text = """
Cliente: María García (España)
Email: maria@ejemplo.es
Kunde: Hans Müller (Deutschland)
E-Mail: hans@beispiel.de
Client: Jean Dupont (France)
Courriel: jean@exemple.fr
"""

response = client.tokenize(text, policy="gdpr_eu")
# Detects PII across Spanish, German, and French

Slavic Languages

text = """
Osoba: Jan Novák (Česko)
E-mail: jan@priklad.cz
Osoba: Piotr Kowalski (Polska)
E-mail: piotr@przyklad.pl
"""

response = client.tokenize(text, policy="gdpr_eu")
# Works with Czech and Polish

Need Help?

If you’re working with a language not listed here or experiencing issues:

Email: hello@blindfold.dev
Documentation: Check our examples for multilingual use cases