Regex Tester

Write and test regular expressions in real time. See matches highlighted with full capture group details.

/ /

Ready

Test String

Highlight matches

Matches will appear here as you type…

Any character (except newline)

Any digit 0–9

Word character [a-zA-Z0-9_]

Whitespace character

Start of string/line

End of string/line

0 or more (greedy)

1 or more (greedy)

0 or 1 (optional)

( )

Capture group

[ ]

Character class

Alternation (OR)