Test regular expressions with live match highlighting, group capture and a replace mode. Includes a curated library of security patterns for log analysis, forensics and input validation, plus a syntax cheat sheet. Everything runs in your browser using the native engine.
Invalid regular expression
Invalid regular expression
Curated regex patterns for cybersecurity. Click any pattern to load it into the tester.
Quick reference for JavaScript regex syntax. Click any token to insert it into the tester pattern field.
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