Security
How PasteToAI keeps your data safe with a zero-trust, client-side architecture.
Our Security Philosophy
PasteToAI is built on a simple principle: we can't leak what we never receive.
Unlike traditional SaaS tools that process your data on remote servers, PasteToAI runs entirely in your browser. Your text never leaves your device—not to our servers, not to any third party, not anywhere.
Client-Side Architecture
How It Works
- You paste text into PasteToAI
- JavaScript runs locally in your browser to detect PII
- Results appear instantly—no network requests
- When you close the tab, everything is gone
There's no database storing your pastes. No API calls transmitting your data. No logs of what you've processed.
What This Means
- No data breaches possible — There's no central server storing user data
- No employee access — We literally cannot see what you paste
- No subpoenas — We can't hand over data we don't have
- Works offline — Once loaded, PasteToAI works without internet
Technical Details
PII Detection
All pattern matching happens client-side using JavaScript regular expressions and heuristics. We detect:
- Email addresses
- Phone numbers
- Social Security Numbers (SSN)
- Credit card numbers
- API keys and tokens
- IP addresses
- Physical addresses
- Dates of birth
- And more...
No External Calls
PasteToAI makes zero API calls with your pasted content. You can verify this yourself:
- Open your browser's Developer Tools (F12)
- Go to the Network tab
- Paste text into PasteToAI
- Watch—no requests are made
Open for Inspection
Our detection logic runs in your browser, which means you can inspect exactly what code is executing. There are no obfuscated server-side processes.
Comparison with Server-Side Tools
| Feature | PasteToAI | Server-Side Tools |
|---|---|---|
| Data leaves your device | No | Yes |
| Requires account | No | Usually |
| Works offline | Yes | No |
| Data breach risk | None | Exists |
| Vendor can read your data | No | Yes |
| Compliance-friendly | Yes | Varies |
Best Practices
While PasteToAI provides strong privacy guarantees, here are additional recommendations:
- Use HTTPS — Always access PasteToAI via HTTPS (we enforce this)
- Clear clipboard — After pasting sensitive data, clear your clipboard
- Private browsing — For extra caution, use incognito/private mode
- Verify before sharing — Always review the redacted output before sharing with AI tools
Questions?
If you have security questions or want to report a vulnerability, contact us.
Protect your sensitive data
PasteToAI detects and redacts PII before you share with AI tools. 100% client-side, nothing leaves your browser.
Try PasteToAI Free