Regex Tester
Test and debug regular expressions with real-time matching. See matches highlighted instantly as you type.
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Regex Cheat Sheet
Character Classes
. - Any character
\d - Digit [0-9]
\w - Word char [a-zA-Z0-9_]
\s - Whitespace
Quantifiers
* - 0 or more
+ - 1 or more
? - 0 or 1
{n,m} - n to m times
Anchors
^ - Start of string
$ - End of string
\b - Word boundary
Groups
(abc) - Capture group
(?:abc) - Non-capture
a|b - Alternation