Redact Sensitive Data
Without Trusting a Server
How It Works
Three steps. Everything happens on your device. Nothing is uploaded anywhere.
Upload Your Document
Drop a PDF into the browser. The file stays on your machine — it is not sent to any server.
PII Is Detected Locally
Names, emails, SSNs, credit cards, medical IDs, and 21+ other types are found automatically — all inside your browser.
Download Redacted PDF
Sensitive data is replaced, masked, or encrypted. You download the clean file. No copy exists anywhere else.
See It in Action
Try the interactive playground \u2014 or open DevTools and watch the Network tab while you process a real document.
Built for Regulated Industries
Smart PII Detection
Instantly identify 21+ types of PII including names, credit cards, SSNs, medical licenses, and crypto addresses using advanced NLP models.
Your Data Never Leaves Your Control
Documents are processed entirely on your device. Nothing is uploaded to any server — ours or anyone else's. This isn't a policy, it's the architecture. Verify it in your browser's network inspector.
Full PDF Redaction in Browser
Upload a PDF, detect PII, download a redacted PDF with black rectangles - all in your browser. 8 anonymization methods via Web Crypto API.
No Infrastructure to Manage
No servers to provision or secure. Works as a web app with optional REST API and AI agent integration for automated workflows.
Built for Regulated Industries
Purpose-built redaction solutions for organizations that handle sensitive information under strict compliance requirements.
Legal
Attorney-client privilege protected. Documents never leave the browser during redaction.
Healthcare
HIPAA-compliant PHI de-identification. No PHI transmitted to any server.
Government
Works on air-gapped systems. Full offline capability after first load.
Financial
PCI DSS data processing in browser sandbox. Credit card validation via Web Crypto.
Multiple Integration Paths
Embed the client-side engine in your web app, use the optional REST API for server workflows, or connect AI agents via MCP. Your architecture, your choice.
Browser Library (Default)
Import the TypeScript engine into any web app. Zero server dependency. Client-side PII detection.
REST API (Optional)
Server-side endpoints for headless pipelines and programmatic use cases.
MCP Server for AI Agents
Give Claude the ability to detect and anonymize PII as a privacy guardrail.
{
"mcpServers": {
"pdf-redaction": {
"command": "node",
"args": ["./dist/mcp/server.js"],
"env": {
"LOG_LEVEL": "info"
}
}
}
}The Only Redaction Tool That Never Sees Your Data
Other tools require you to upload sensitive documents to their servers. We don't — and we can prove it.
| Feature | Presidio Next | Self-Hosted Tools | Cloud Services |
|---|---|---|---|
| Documents stay on your device | — | — | |
| Zero data uploaded to any server | — | — | |
| Works without internet | — | — | |
| No servers to provision or secure | — | — | |
| Provable privacy (verify in DevTools) | — | — | |
| Automated PII detection | |||
| 21+ entity types (SSN, PHI, PCI, etc.) | — | ||
| Full PDF redaction | |||
| Open source engine | — | — | |
| Air-gapped network compatible | — | — |
Simple, Transparent Pricing
Start free, scale when you're ready.
Professional
- Unlimited documents
- Batch processing
- REST API access
- Priority detection
- Email support
Enterprise
- Everything in Professional
- Custom detection rules
- Compliance audit logs
- SLA guarantee
Stop Uploading Sensitive Documents to Someone Else's Server
Detect and redact PII from PDFs entirely on your device. No uploads. No cloud processing. Open source engine you can audit. Start free, upgrade when you're ready.