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Runs in your browser. Coded By ©madmak787·More tools

ToolsCode & DataRegex Tester

Regex Tester

Write a JavaScript regular expression and see every match and capture group highlighted as you type.

Search tools

Jump to any tool or change the theme

Regular expression

//g

Test string

Enter a pattern to see matches.

Quick reference

.: Any character except newline
\d \w \s: Digit, word character, whitespace
\D \W \S: Not digit, word, whitespace
[abc] [^abc]: Any of / none of a, b, c
[a-z]: Character range
^ $: Start / end of string (or line with m)
\b: Word boundary
* + ?: 0 or more, 1 or more, 0 or 1
{2,5}: Between 2 and 5 times
*? +?: Lazy (as few as possible)
(abc): Capture group
(?<name>abc): Named capture group
(?:abc): Group without capturing
a|b: a or b
(?=a) (?!a): Followed by / not followed by a
(?<=a) (?<!a): Preceded by / not preceded by a