Xvert.io

Regex Tester

Test and debug regular expressions

Regular Expression

//

Valid

Common flags:gglobaliignore casemmultilinesdotall

Quick Examples

Test String

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Replacement Text

Use $1, $2, etc. for capture groups

Result

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Regex Cheat Sheet

Character Classes

. Any character
\\d Digit
\\w Word character
\\s Whitespace
[abc] Any of a, b, c

Quantifiers

* 0 or more
+ 1 or more
? 0 or 1
{n} Exactly n
{n,m} Between n and m

Anchors

^ Start of string
$ End of string
\\b Word boundary
(?=...) Lookahead
(?!...) Negative lookahead