Mask SSNs, credit cards, emails & phone numbers — directly in your browser. Your data never leaves your device. Built for HR, Legal & Finance professionals who can't afford leaks.
Try it now — no signup, no BS. The regex engine runs entirely in your browser.
Upload .txt or .csv files for batch redaction. Unlocked with one-time purchase.
or click to browse — .txt and .csv supported
Paste your document text directly or drag & drop a file into the secure local zone.
Our pattern engine instantly detects SSNs, credit cards, emails, and phone numbers.
All processing happens in your browser. Zero network calls. Zero server contact.
Export your sanitized file instantly. Share it safely — completely PII-free.
Works without internet. Your data stays on your machine — always. Verifiable via DevTools Network tab.
Email, Phone (US+International), SSN, Credit Cards, IP Addresses, and Dates of Birth — all in real-time.
Choose between Solid Black Blocks (█████), [REDACTED - PII] legal-standard, or [CONFIDENTIAL] for your workflow.
Every redacted block is clickable. Instantly toggle back to original text to fix false positives — no re-processing needed.
Generate and download a timestamped audit report (.txt) — essential for GDPR, HIPAA, and legal compliance records.
Drag & drop .txt and .csv files — redact thousands of rows in seconds. Download clean files instantly.
Add your own keywords or regex patterns — redact firm names, client IDs, case numbers, or any custom PII.
Track every redaction action in your current session with per-type counts. Clears on tab close — nothing stored.
Pay $25 once. Use forever. No subscription. No renewal. No gotchas. All future updates included.
Why give your clients' SSNs to a SaaS company's server?
| Feature | 🛡 SanitizeOS | ☁️ Cloud Tools |
|---|---|---|
| Data stays on your device | ✓ | ✗ |
| Works without internet | ✓ | ✗ |
| No account / signup required | ✓ | ✗ |
| No monthly subscription | ✓ | ✗ |
| GDPR / HIPAA compliant pipeline | ✓ | Maybe |
| Zero API / Zero server calls | ✓ | ✗ |
| Audit-proof local processing | ✓ | ✗ |
| One-time lifetime pricing | ✓ ($25) | ✗ ($$/mo) |
One-time payment · No subscription · Use forever
🛡 14-day no-questions refund guarantee
"I deal with sensitive payroll data daily. The fact that nothing gets uploaded anywhere is a game-changer. My compliance officer actually loves it."
"Our firm handles client SSNs and financial records. I needed a tool I could run on an air-gapped machine. SanitizeOS is exactly that."
"Redacted 3,000 rows of client data in seconds from a CSV. Worth every penny for the peace of mind alone. No cloud, no risk."
Absolutely not. SanitizeOS runs entirely in your browser using vanilla JavaScript. There is no backend, no API, no server, and no network request made with your data. Open DevTools → Network tab → paste text → watch: zero requests fire.
The paid tool detects 6 types: Email Addresses, US & International Phone Numbers, US SSNs, Credit Card Numbers (Visa, MC, Amex, Discover), IP Addresses, and Dates of Birth. You can also add unlimited custom keyword or regex rules.
You can choose how redacted text looks: Solid Black Blocks (█████) for the classic redaction look, [REDACTED - PII] for legal-standard labelling, or [CONFIDENTIAL] for formal document workflows. Switch between them any time.
In the output pane, every redacted block is a clickable element. If the regex accidentally masked something that isn't PII (a false positive), just click it to toggle back to the original text — no need to re-process the entire document.
The paid tool includes a dedicated Audit Report tab. Click "Generate Audit Report" to download a timestamped .txt file containing: the date/time, a session ID, and a count of every PII type removed (e.g., "3 Emails, 1 SSN, 2 Phone Numbers"). No actual PII is included — only the summary. Store this file as part of your GDPR or HIPAA compliance records.
The free demo lets you paste text and see it redacted with basic output — great for quick one-off sanitization. The paid version ($25) unlocks: 3 masking styles, click-to-reveal, file uploads (.txt/.csv), bulk processing, custom rules engine, compliance audit log, session history, and download functionality.
Gumroad delivers the tool file (tool.html) automatically after purchase. No account needed — just download and open in any browser. It works immediately, fully offline, forever.
14-day no-questions-asked refund. If SanitizeOS doesn't work for your use case within 14 days of purchase, email through Gumroad for a full refund.
Yes — that's a core design goal. Download tool.html once, copy it to a USB drive, and it works on any machine with any browser — no internet, no installation, no dependencies.
One file. One payment. Zero risk. SanitizeOS is the last redaction tool you'll ever need.