Developer Tools

Regular Expression (Regex) Tester

Test, validate, and inspect regular expressions with real-time match highlighting, flag toggling, and capture group extraction.

Regular Expression Pattern

//gi

Flags:

Test String2 matches found

Matches List (2)

#1contact@toolkit.dev

Index 35

#2manager123@sub.company.org

Index 58

Common Regex Presets

Client-Side Execution

All regular expressions are parsed and matched natively using the JavaScript RegExp engine inside your browser. No strings are transmitted to any server.