🔀 Anonymize Sensitive Data for Public LLMs

Automatically mask PII, HIPAA data, and identifiers before sending to ChatGPT, Claude, or any AI

🔒

100% Private — Zero Data Storage

We don't store anything. All processing happens entirely in your browser using JavaScript. Your data is never sent to our servers — because there's no server-side processing at all. No databases. No logs. No accounts. No cookies. When you close this tab, everything disappears. Your sensitive information never leaves your device.

📋 How It Works

1
Paste & Mask — Paste text, click Mask. Auto-detects SSNs, emails, phones, IPs, dates. Add names/companies manually.
2
Copy to LLM — Copy the masked text to ChatGPT, Claude, or any AI. Safe to share!
3
Unmask Response — Paste the AI's response back, click Unmask. Original values restored.
🔧 Technical Details — How We Keep Your Data Private

No server, no storage: This page is pure HTML + JavaScript. When you paste text, it stays in your browser's memory only. We have no backend processing, no database, no way to see or store what you type — even if we wanted to.

Detection method: Regex pattern matching (no AI). Detects: SSN Email Phone IP Address DOB MRN Account #. Replacements use Microsoft-style fake data (Contoso, Fabrikam, etc.).

What happens to your data: Exists only in browser memory while this tab is open. Click "Start Over" or close the tab = gone forever. Nothing persists.

① Paste Your Sensitive Text

Auto-detects: SSN, Email, Phone, IP, DOB, MRN, Account #