euredact

Fast, zero-dependency European PII detection and redaction for Node.js.

Detects and redacts personal data across 31 European countries using rule-based pattern matching with checksum validation and context-aware false-positive suppression.

Install

npm install euredact

Quick Start

import { redact } from "euredact";

const result = redact("Mijn BSN is 123456782 en email jan@example.com", {
  countries: ["NL"],
});

console.log(result.redactedText);
// "Mijn BSN is [NATIONAL_ID] en email [EMAIL]"

console.log(result.detections);
// [{ entityType: "NATIONAL_ID", text: "123456782", start: 12, end: 21, ... }, ...]

API

redact(text, options?)

Returns a RedactResult with the redacted text and a list of detections.

interface RedactOptions {
  countries?: string[];    // Country codes (e.g. ["NL", "BE"]) — recommended for best precision
  pseudonymize?: boolean;  // Replace with consistent pseudonyms (EMAIL_1, EMAIL_2, ...)
  detectDates?: boolean;   // Include DOB/date-of-death detections (off by default)
  cache?: boolean;         // Enable result caching (default: true)
}

redactBatch(texts, options?)

Process multiple texts efficiently. Loads country configs once.

availableCountries()

Returns the list of supported country codes.

Supported Countries

AT, BE, BG, CH, CY, CZ, DE, DK, EE, EL, ES, FI, FR, HR, HU, IE, IS, IT, LT, LU, LV, MT, NL, NO, PL, PT, RO, SE, SI, SK, UK

Detected PII Types

Performance

• 0.02ms per redaction (typical text)
• Zero runtime dependencies
• 86KB total package size
• Checksum validators eliminate false positives at the pattern level
• Context-aware suppressors filter currency amounts, units, references, and legal citations

CommonJS

const { redact } = require("euredact");

License

Apache-2.0