Regex Tester Online

Test regular expressions with match highlighting, capture groups and text replacement.

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About Regex Tester

Test and debug regular expressions with real-time match highlighting, capture group display and text replacement.

FAQ

Which regex flavor is used?

JavaScript regular expressions (ECMAScript). Most common regex features are supported.

What are capture groups?

Capture groups are portions of the pattern enclosed in parentheses. They allow you to extract specific parts of a match.