Regex Tester
Test and debug regular expressions with real-time highlighting
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Master Regular Expressions with Our Regex Tester
Why Use Our Regex Tester?
Regular expressions are powerful but complex. Our Regex Tester helps you:
- Validate patterns in real-time with color highlighting
- Debug complex expressions with match explanations
- Test against multiple input strings simultaneously
- Learn regex syntax through visual feedback
Key Features
- VS Code-like Syntax Highlighting - Colors for groups, quantifiers, anchors
- Match Explanation - Understand what each part of your regex does
- Flags Support - Toggle case sensitivity, global matching
- Error Detection - Highlights invalid regex syntax
How to Use This Regex Tester?
1
Enter your regex pattern in the first box
2
Add test strings in the second box
3
Click "Test Regex" to see matches
4
Use "Explain" to understand the pattern
Common Regex Examples
^[A-Za-z0-9]+$
Alphanumeric string
\b[A-Za-z0-9._%+-]+@[A-Za-z0-9.-]+\.[A-Z|a-z]{2,}\b
Email validation
(\d{3})-(\d{3})-(\d{4})
US phone number