Regex library
Look up starter patterns for common tasks.
Processed in this browser. Nothing is sent to a server.
- emailPragmatic email. Not the full RFC.
How do I use Regex library?
Search for email, uuid, slug, or another word.
What are the limits of Regex library?
Each pattern is a starting point. Test it in the regex tester before use.
Related tools
- Email validatorCheck an email's shape without contacting the mailbox.
- URL validatorCheck that the text is an absolute URL.
- Regex testerTest a JavaScript regular expression against text.
- JWT decoderRead the header and payload of a JSON Web Token.
- IPv4 validatorCheck four decimal octets without a leading zero.
- IPv6 validatorCheck the general form of an IPv6 address.