Regex Craft

Build, test, and visualize regular expressions. Live matching. Zero dependencies.

Regular Expression

g (global) i (case-insensitive) m (multiline) s (dotAll)

Test String

Matches

Match Details

Quick Reference

. Any char

\d Digit

\w Word char

\s Whitespace

^ Start

$ End

* 0+ times

+ 1+ times

? 0 or 1

{n,m} n to m

[abc] Char class

() Group

(?:) Non-capture

(?=) Lookahead

(?!) Neg. lookahead

\b Word boundary