🔍 Regex Tester
Test regular expressions with live matching, color-coded groups, and plain English explanation
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Regular Expression
No Pattern
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Test Text
No Text
💡 Sample Patterns
Try these common regex patterns:
About Regex Tester
Our free online regex tester helps developers test and debug regular expressions with real-time matching, color-coded groups, and plain English explanations. Whether you're validating input, parsing text, or learning regex patterns, our tool provides comprehensive testing capabilities.
Features
- Live Matching: Real-time regex testing as you type
- Color-coded Groups: Visual highlighting of capture groups
- Multiple Flags: Support for all regex flags (g, i, m, s, u, y)
- Match Details: Detailed information about each match
- Pattern Explanation: Plain English explanation of regex patterns
- Sample Patterns: Common regex patterns to get started
- Copy Results: Easy export of test results
How to Use
- Enter your regular expression in the pattern field
- Add test text in the text area
- Select appropriate regex flags
- Click "Test Regex" to see results
- Review matches, groups, and explanations
Common Use Cases
- ✅ Input Validation: Test regex patterns for form validation
- ✅ Text Parsing: Extract specific patterns from text
- ✅ Data Cleaning: Find and replace patterns in data
- ✅ Learning: Understand regex patterns with explanations
- ✅ Debugging: Troubleshoot complex regex patterns