What is a Regex Tester?

A Regex Tester is a tool that lets you enter a regular expression and test it against sample text to see if it matches.

How do I use this Regex Tester?

Enter your regex pattern, input sample text, and see highlighted matches in real-time.

Yes! It supports advanced regex features like lookaheads, backreferences, and Unicode matching.

Pattern lab

Validate JavaScript regular expressions with presets, flags, and live highlighted matches.

Preset Patterns

Regex Pattern

Flags

Sample Text