Regular Expression Tester

Common Regex Patterns
Email Address[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,}
Phone Number (US)\(?([0-9]{3})\)?[-. ]?([0-9]{3})[-. ]?([0-9]{4})
URLhttps?:\/\/(www\.)?[-a-zA-Z0-9@:%._\+~#=]{1,256}\.[a-zA-Z0-9()]{1,6}\b([-a-zA-Z0-9()@:%_\+.~#?&//=]*)
IP Address^(?:(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.){3}(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)$
Date (MM/DD/YYYY)^(0[1-9]|1[0-2])\/(0[1-9]|[12][0-9]|3[01])\/\d{4}$
Hexadecimal Color^#?([a-fA-F0-9]{6}|[a-fA-F0-9]{3})$

Regular Expression Tester

The Regular Expression Tester is an essential development tool that allows you to test, validate, and debug regex patterns in real-time. This comprehensive utility helps developers create accurate pattern matching solutions for data validation, text processing, and search operations across web applications and software projects.

Key Features

  • Real-Time Testing: Instant pattern matching with live highlighting of matches
  • Flag Support: Complete support for global, case-insensitive, and multiline flags
  • Match Information: Detailed information about matches including position and groups
  • Error Detection: Clear error messages for invalid regex patterns
  • Common Patterns: Examples for email, phone numbers, URLs, and other use cases

Perfect for testing email validation, phone number formatting, data extraction, and text processing. Whether you're building data validation systems or implementing text manipulation features, this regex tester provides essential pattern development capabilities.

Pro Tip: Start with simple patterns and gradually add complexity. Test edge cases to ensure your regex handles unexpected input gracefully.