Regex Tester
Test regular expressions with instant matching, capture groups, and highlighted results.
Pattern
//
Test String
Matches
Capture Groups
Quick Reference
. Any char\d Digit\w Word char\s Whitespace^ Start$ End* Zero or more+ One or more? Optionaln,m N to M(...) Capture group(?:...) Non-captureFrequently Asked Questions
What regex flavors are supported?
This tool uses your browser's JavaScript RegExp engine, which supports ES2024+ features including named groups, lookbehind, and Unicode property escapes.
What are common regex flags?
g = global (all matches), i = case-insensitive, m = multiline, s = dotAll, u = Unicode.
Is my data sent anywhere?
No. All processing is done client-side in your browser.