Free Regex Tester & Debugger
Build, test & understand
regular expressions
Real-time match highlighting, pattern explanations, and a comprehensive cheat sheet. Master regex with instant visual feedback.
⚡
Instant Feedback
See matches highlighted as you type your pattern.
📖
Pattern Breakdown
Understand what each part of your regex does.
📋
Quick Reference
Comprehensive cheat sheet always at hand.
Regular Expression
//g
Test String
Hello World!
This is a test string.
123-456-7890
email@example.com
Enter a regex pattern to see the explanation
Cheat Sheet