REGEX

001

PATTERN

/ /g

002

TEST STRING

005

REPLACE

Live preview enabled

006

QUICK REFERENCE

Character Classes

. Any character (except newline)

\d Digit (0-9)

\w Word character (a-z, A-Z, 0-9, _)

\s Whitespace

[abc] Any of a, b, or c

[^abc] Not a, b, or c

Quantifiers

* 0 or more

+ 1 or more

? 0 or 1

{n} Exactly n

{n,} n or more

{n,m} Between n and m

Anchors & Groups

^ Start of string/line

$ End of string/line

\b Word boundary

(abc) Capture group

(?:abc) Non-capturing group

a|b a or b

007

ABOUT REGEX

Regular expressions (regex) are powerful patterns for matching and manipulating text. Test your regex patterns with live highlighting and detailed match information.

Features: Live match highlighting, capture groups extraction, flags (g, i, m, s, u), replace mode with preview, URL sharing, JavaScript regex engine.