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Regex Tester

Test regular expressions with live pattern matching and highlighting

Common Patterns

Regular Expression Pattern

Flags

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Common Regex Patterns

\d

Any digit (0-9)

\w

Any word character (a-z, A-Z, 0-9, _)

\s

Any whitespace character

.

Any character except newline

^

Start of string/line

$

End of string/line

*

Zero or more times

+

One or more times

?

Zero or one time

{n}

Exactly n times

[abc]

Any of a, b, or c

(abc)

Capture group

Flags

g

Global - find all matches

i

Case insensitive

m

Multiline - ^ and $ match line boundaries

s

Dot all - . matches newlines

u

Unicode - treat pattern as Unicode

y

Sticky - match from lastIndex only

Regex Tester

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Common Regex Patterns

Flags