Regex Tester

Professional regular expression testing and debugging tool with real-time matching, capture groups, and comprehensive pattern analysis for text processing and validation. All processing happens locally in your browser for privacy.

Regular expressions are fundamental to text processing, data validation, and string manipulation. This tool is essential for developers, data analysts, and anyone working with pattern matching and text parsing.

• Real-time Testing: Live pattern matching with instant results and highlighting
• Capture Groups: Visualize and analyze regex groups and backreferences
• Multiple Flavors: Support for JavaScript, PCRE, and other regex engine variations
• Match Analysis: Detailed breakdown of matches with position and length information
• Pattern Library: Common regex patterns for validation, parsing, and extraction