Regex Generator
Get a tested regex for emails, URLs, phone numbers, postcodes, UUIDs, dates and more, with code for four languages. Free and private: runs in your browser.
Describe what you want to match, or pick from the list, to get a reviewed pattern, test results and copy-ready code.
Runs entirely in your browser. Nothing you paste is uploaded or stored.
Use cases
- Find a syntax error before the build or deploy fails.
- Check config files in code review.
- Learn the rules your linter enforces.
Frequently asked questions
Should I validate emails with regex?
Use a simple regex to catch typos, then confirm the address by sending an email. Complex "RFC-perfect" patterns are slow and still accept fake addresses.
Is the Regex Generator free?
Yes. It is free with no sign-up, and it runs entirely in your browser, so your input is never uploaded or stored.
What should I do with the issues it reports?
Fix high-severity items first; they usually break builds or deployments. Lower-severity items are style and best-practice suggestions.
Related tools
Checking one snippet is a start. Scan your whole repository for free with CodeInspector.