Regex Tester
Test, debug, and validate regular expressions with real-time matching, group highlighting, and flag support
How to Use This Tool
Enter your regular expression in the pattern field.
Toggle flags: g (global), i (case-insensitive), m (multiline).
Paste test text below — all matches are highlighted in real time.
Use the Common Patterns sidebar for quick inserts (email, URL, phone, etc.).
About This Tool
Regex Tester is a real-time regular expression testing tool. All matches are highlighted directly in your test text, with detailed match info in a structured table showing groups and positions. Toggle flags, view capture groups, and use the common patterns sidebar for quick starts. A plain-English description explains what your regex does.
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