Regex Tester
Test regular expressions with live match highlighting and capture group details.
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Common Patterns
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How to Use the Regex Tester
- Enter your regular expression in the pattern field between the slashes.
- Check or uncheck flags (g, i, m, s, u) to control matching behavior.
- Type your test string — matches are highlighted in real time.
- Click any Common Pattern to load a pre-built regex for emails, URLs, and more.