Real-time regex testing · Match highlighting · Group extraction · Replace
.
\d
\w
\s
\b
^
$
*
+
?
*?
+?
{n}
{n,m}
(abc)
(?:abc)
(?=abc)
(?!abc)
(?<=abc)
(?<!abc)
[abc]
[^abc]
[a-z]
a|b
\1
(?<name>)
\k<name>