Online Tool Store
Sensitive Data Regex Library
Search a library of regular expressions for emails, credit cards, SSNs, IPs, and other sensitive data patterns. Runs entirely in your browser.
🔒 This tool runs entirely in your browser. Your files are never uploaded to a server.
Email address
[\w.+-]+@[\w-]+\.[a-zA-Z]{2,}
Credit card number
\b(?:\d[ -]*?){13,16}\b
US Social Security Number
\b\d{3}-\d{2}-\d{4}\b
IPv4 address
\b(?:\d{1,3}\.){3}\d{1,3}\b
Example shown — copy any pattern to use in your own validation or scanning code.
How it works
- Search or browse the library of sensitive data patterns.
- Find the pattern type you need — email, SSN, credit card, and more.
- Copy the regex into your own validation or scanning code.
The library collects well-tested regular expressions for common PII and secret formats — patterns commonly used for log scrubbing, input validation, and data-loss-prevention scanning — organized for quick lookup.
FAQ
Is my search query uploaded anywhere?
No. Browsing the library happens entirely in your browser — nothing is sent to a server.
What patterns are included?
Common PII and secret patterns — email addresses, credit card numbers, SSNs, IP addresses, API keys, and more, in one reference library.
Are these patterns production-ready?
They cover the common cases well but, like any regex-based detection, can produce false positives or miss edge cases — review before relying on them for compliance-critical scanning.
Can I copy a pattern directly into my code?
Yes — each pattern is shown as a ready-to-paste regex literal for use in validation, log scrubbing, or DLP scanning code.
How we compare
| Feature | Online Tool Store | Writing patterns from scratch | Scattered Stack Overflow answers |
|---|---|---|---|
| Patterns collected in one place | ✓ | Slow, easy to miss edge cases | Scattered across many pages |
| Free, no setup | ✓ | ✓ | ✓ |
Piecing together patterns from scattered forum answers is slow and inconsistent. Sensitive Data Regex Library keeps them all in one searchable place.