Female Tools  ·  Regex Tester

Regex Tester

Test patterns and see matches highlighted live. View capture groups and get a plain-English breakdown of your expression.

This regex tester lets developers and anyone learning regular expressions try out a pattern against real text and immediately see what it does. Type a pattern, toggle the g, i, m, and s flags, and paste in test text — matches are highlighted inline in color as you type, with a running count of how many were found. A detailed match list breaks out each capture group individually along with its position in the string, which is invaluable when building a pattern for form validation, log parsing, or text extraction. Below that, a plain-English explanation panel scans your pattern for common tokens like character classes, quantifiers, anchors, and lookaheads, and describes what each one means in a sentence. Everything runs instantly in the browser using JavaScript's native RegExp engine, with no text ever sent anywhere.