Regex Tester

Test regular expressions with live match highlighting, capture groups, flags control, and a quick-reference cheat sheet — all in your browser.

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Match Info

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Matches

Enter a regex and test string

📖 Quick Reference
. Any character
^ Start of line
$ End of line
\d Digit [0-9]
\w Word char
\s Whitespace
* 0 or more
+ 1 or more
? 0 or 1
{n,m} n to m
[abc] Char class
(abc) Group
a|b Or
\b Boundary
(?:) Non-capture
(?=) Lookahead

Common Patterns

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