Regex Tester & Builder
Test, build and explore usage examples of regular expressions (RegEx).
Common Regex Examples
URL
Phone
Date (YYYY-MM-DD)
IP Address
Advanced Regex Tester & Pattern Builder
Test, debug, and build regular expressions with real-time validation and visual feedback. Perfect for developers, data analysts, and anyone working with pattern matching and text processing.
Real-time Testing
See regex matches instantly as you type. Visual highlighting shows exactly what your pattern captures with live feedback.
Visual Match Highlighting
Color-coded match highlighting with group extraction. Easily identify captured groups and understand complex patterns.
Pattern Library
Pre-built regex patterns for common use cases like emails, URLs, phone numbers, and data validation.
Professional Use Cases
- Form Validation
Validate emails, phone numbers, passwords, and user input in real-time
- Data Extraction
Extract specific patterns from logs, documents, and structured text
- Text Processing
Search, replace, and manipulate text with powerful pattern matching
- Log Analysis
Parse server logs, error messages, and structured data efficiently
Regex Flags & Features
gGlobalFind all matches, not just the first one
iCase InsensitiveIgnore case when matching patterns
mMultiline^ and $ match line boundaries
sDot All. matches newline characters
🚀 Quick Regex Examples
Email Validation
^[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,}$Matches valid email addresses
Phone Number
^\+?[1-9]\d{1,14}$International phone format
URL Pattern
https?:\/\/(www\.)?[-a-zA-Z0-9@:%._\+~#=]{1,256}HTTP/HTTPS URLs
Date Format
^\d{4}-\d{2}-\d{2}$YYYY-MM-DD format