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🔍 Regex Tester

Test and debug regular expressions online. Real-time matching, explanation, and examples for JavaScript, Python, PHP, and more.

Key Features

⚡ Real-time Matching

See matches highlighted as you type

📖 Regex Explanation

Get human-readable regex pattern explanation

🎯 Match Groups

View capture groups and named groups

🚩 Flags Support

Global, multiline, case-insensitive flags

🔄 Replace Preview

Test regex replacements with preview

💾 Save Patterns

Save frequently used regex patterns

📚 Common Patterns

Email, URL, phone number templates

🌐 Multi-Language

JavaScript, Python, PHP, Java flavors

🧪 Test Cases

Create and run multiple test cases

Common Regex Patterns

📧 Email Validation

^[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,}$

🌐 URL Matching

https?:\/\/(www\.)?[-a-zA-Z0-9@:%._\+~#=]

📱 Phone Numbers

^[+]?[(]?[0-9]{3}[)]?[-\s\.]?[0-9]{3}[-\s\.]?[0-9]{4,6}$

💳 Credit Cards

^[0-9]{4}[\s-]?[0-9]{4}[\s-]?[0-9]{4}[\s-]?[0-9]{4}$

Start Testing Regex

Test and debug regular expressions with real-time feedback