Regex Tester
Free online regular expression tester with real-time matching, capture group display and common pattern cheatsheet.
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FAQ
Which regex flavor?
JavaScript (ECMAScript) regex — what actually runs in browsers and most Node.js code.
Are capture groups shown?
Yes, match results include all capture groups for debugging complex patterns.
Is there a reference sheet?
Yes, a cheatsheet of common patterns (email, URL, phone) is built in.