Regex Tester

. - Any character

\d - Digit [0-9]

\w - Word char [a-zA-Z0-9_]

\s - Whitespace

[abc] - Any of a, b, c

[^abc] - Not a, b, or c

* - 0 or more

+ - 1 or more

? - 0 or 1

{n} - Exactly n

{n,m} - n to m times

*? - Non-greedy

^ - Start of string

$ - End of string

\b - Word boundary

(abc) - Capture group

(?:abc) - Non-capture

(?<name>abc) - Named group