Regex Tester

Test regular expressions with live matching and highlighting.

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About the Regex Tester

This regex tester lets you test regular expressions in real-time. Write a pattern, enter test text, and see matches highlighted instantly.

How to Use

  1. Enter your regular expression pattern
  2. Type or paste your test string
  3. See matches highlighted in real-time
  4. View match details and groups

Common Regex Patterns

Regex Basics

Regular expressions use special characters to match patterns: . matches any character, * matches zero or more, + matches one or more, ? matches zero or one, \d matches digits, \w matches word characters, \s matches whitespace.