Regex Tester
Test and debug regular expressions with real-time matching, pattern examples, and detailed results. Trusted by developers worldwide for secure, offline regex testing.
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Flags:g=globali=ignore casem=multilines=dotall
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Results
Enter pattern and text to test
Highlighted Matches
Enter a regex pattern to see matches highlighted
Match Details
Enter pattern and test text to see detailed match information
📚 How to Use the Regex Tester
🚀 Getting Started
Step 1: Click any "Try Example" button to load a complete working example with both pattern and test data.
Step 2: Modify the pattern or test text to see real-time results as you type.
Step 3: Use the highlighted matches and detailed results to understand how your pattern works.
🎯 Best Practices
- ✓Start with simple patterns and build complexity gradually
- ✓Use the Try Examples to learn common pattern structures
- ✓Test with various input data to ensure accuracy
- ✓Use capturing groups () to extract specific parts
- ✓Enable real-time testing for instant feedback
💡 Common Use Cases
Form Validation:
Validate email addresses, phone numbers, and user input before submission.
Data Extraction:
Extract URLs, dates, or specific patterns from text content.
Text Processing:
Find and replace text patterns in documents or code.
Log Analysis:
Parse server logs, error messages, and structured data.
🔧 Tool Features
•Real-time testing
•Mobile optimized
•Try Examples
•Pattern library
•Match highlighting
•Group capture
•Copy results
•100% private
📖 Quick Regex Reference
Essential Syntax
. Any character • * 0+ times • + 1+ times
^ Start • $ End • | OR
\d Digit • \w Word • \s Space
Common Patterns
Email: [\\w.-]+@[\\w.-]+\\.[a-z]{2,}
Phone: \\(?\\d{3}\\)?[-. ]?\\d{3}[-. ]?\\d{4}
URL: https?://[\\w.-]+
🎯 Try These Patterns
Email
[\\w.-]+@[\\w.-]+\\.[a-z]{2,}Phone
\\(?\\d{3}\\)?[-. ]?\\d{3}[-. ]?\\d{4}