Regex Tester

Test regular expressions with real-time highlighting. Online regex testing tool for API validation and data extraction.

Regex Pattern

Enter your regular expression pattern

Common Patterns

Click to load common regex patterns

Enter a pattern and test string to see results

Regex Reference

. - Any character

^ - Start of string

$ - End of string

* - Zero or more

+ - One or more

? - Zero or one

[abc] - Any of a, b, c

[^abc] - Not a, b, c

[a-z] - Lowercase letters

[A-Z] - Uppercase letters

[0-9] - Digits

\d - Digit