Regex Tester
Test regular expressions with live match highlighting and capture groups, plus built-in examples.
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This tool runs locally in your browser — your content is never uploaded to a server.
How to use
- 1Enter your pattern and toggle flags like g, i, m, s, u with the flag buttons.
- 2Paste test text below — matches are highlighted live.
- 3Inspect each match’s position and capture groups; click “Examples” to load common regexes for email, phone, URL and more.
- 4When satisfied, click “Copy matches” to save, or “Clear” to test again.
FAQ
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