Regex Tester
Write a regular expression and see matches highlighted in your test string in real time, with capture groups and match positions listed below.
2 matches
Contact us at hello@example.com or support@toolvyne.com for help.
Matches
hello@example.comat index 14
support@toolvyne.comat index 35
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Frequently asked questions
Which regex flavor does this use?+
JavaScript's native RegExp engine, the same one used by browsers and Node.js. Behavior is very close to PCRE but not identical.
Why do I need the "g" flag?+
This tool always tests globally so it can find every match, not just the first one, regardless of whether you added "g" yourself.
Is my test data sent anywhere?+
No, matching runs entirely in your browser using JavaScript's built-in RegExp.