Microsoft Presidio Alternative for JavaScript & Node.js: Zero-Docker In-Memory PII Engine

The Architectural Cost of Microsoft Presidio in Node.js Stacks

Microsoft Presidio is a widely referenced open-source PII anonymization framework, but it is architected primarily for Python environments. When Node.js and TypeScript developers need PII redaction for modern web applications, RAG pipelines, or microservices, integrating Presidio forces teams to maintain a secondary Python runtime, manage a 500MB+ Docker container, and introduce cross-service network latency into synchronous request paths.

import { sanitize, restore } from '@privacyscrubber/sdk';

// 1. Sanitize text synchronously in RAM (<1ms latency)
const { scrubbedText, tokenMap, telemetry } = sanitize(rawUserInput, {
    profile: 'Medical',       // Replaces Presidio custom recognizers
    detectSecrets: true          // Strips API keys, passwords, and tokens
});

// 2. Query LLM safely with sanitized tokens
const aiOutput = await callExternalAI(scrubbedText);

// 3. Re-hydrate tokens back to original values in local memory
const { restoredText } = restore(aiOutput, tokenMap);