Regex Tester
Test JavaScript regular expressions with live match highlighting.
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About the Regex Tester
Regex Tester highlights every match of a regular expression in your sample text, lists capture groups and previews search-and-replace results. It uses the JavaScript regex engine with flags g, i, m, s and u.
How to use the Regex Tester
- Enter the regular expression.
- Choose flags and enter test text.
- Review matches, groups and the replacement preview.
Frequently asked questions
Which regex flavor is used?
JavaScript (ECMAScript), as used in browsers and Node.js.
Does it support Arabic?
Yes. With the u flag you can use Unicode classes such as \p{L}.