Regex Tester & Matcher | Debug Regular Expressions
Instantly test, debug, and execute regular expressions locally in your browser. Features real-time syntax highlighting and match extraction.
Regex Tester
Instantly test, debug, and execute regular expressions locally in your browser.
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Test String
Match Result0 matches
Hello 123 world! This is a test 456.
Real-Time Pattern Debugging
Test and iterate on complex patterns with instant visual feedback. Our regex debugger highlights capture groups and matches in real-time.
"Securely test patterns against sensitive data without ever sending them to a remote server."
Capture Groups
Visualize individual matches and nested groups instantly.
Pattern Flags
Support for global, case-insensitive, and multiline flags.