Developer Utilities
Regex Tester
Live match highlighting against your own test string, plus a library of common patterns — email, URL, IPv4, hex colour — to start from.
FreeNo sign-upRuns in your browser
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/[\w.+-]+@[\w-]+\.[a-zA-Z]{2,}/gHow it works
- 1Write or pick a pattern
- 2Set flags and paste test text
- 3Matches are highlighted live in the text
Who this is for
- Debugging a regex before shipping it in code
- Testing validation patterns against edge cases
- Learning regex syntax with immediate visual feedback
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