Regex Tester

Test regular expression patterns with real-time highlighting and match details.

Regular Expression
//g
Test String

About Regex Tester

This regex tester helps you build and test regular expressions with instant visual feedback. All processing happens in your browser.

Features

  • Real-time pattern matching and highlighting
  • Support for all JavaScript regex flags (g, i, m, s, u)
  • Capture group detection and display
  • Match index positions

Common Regex Patterns

  • \\d+ - Match one or more digits
  • [a-zA-Z]+ - Match one or more letters
  • \\w+@\\w+\\.\\w+ - Simple email pattern
  • ^https?:// - URL protocol