Regex Tester

Test and debug regular expressions with live highlighting, match details, and capture groups. Includes common patterns and regex reference guide.

Features

Live pattern matchingSyntax highlightingMatch details with groupsCommon pattern presetsFlag support (g, i, m, s, u, y)Regex reference guide

Pattern

Flags

Common Patterns

0 matches

john.doe@example.com invalid-email jane.smith@test.co.uk not.an.email@ admin@company.org

No matches found

. - Any character except newline

\d - Any digit (0-9)

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

\s - Any whitespace character

[abc] - Any of the characters a, b, or c

[^abc] - Any character except a, b, or c

* - Zero or more

+ - One or more

? - Zero or one

{n} - Exactly n times

{n,m} - Between n and m times