Regex Tester
Test regular expressions with live highlighting, match groups, and a pattern cheatsheet.
No data leaves your browser
Pattern
/
/
Test String
Frequently Asked Questions
Is the regex tester free?
Yes, completely free with no account or signup required.
Which regex flavor is used?
JavaScript's built-in RegExp (ECMAScript standard) with flags: global (g), case-insensitive (i), multiline (m), and dotAll (s).
What features are included?
Real-time match highlighting, capture group display, named groups, a clickable cheatsheet, and match statistics.