regex101: URL Matcher

Non-Capturing Group(?:(?:ftp|https?):\/\/|mailto:)

1st Alternative(?:ftp|https?):\/\/

Non-Capturing Group(?:ftp|https?)

1st Alternativeftp

ftpthe literal text ftp (case sensitive)

2nd Alternativehttps?

httpthe literal text http (case sensitive)

s?optionally matches the literal s (115₁₀ / 163₈ / 73₁₆) (case sensitive)

:the literal : (58₁₀ / 72₈ / 3A₁₆)

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

2nd Alternativemailto:

mailto:the literal text mailto: (case sensitive)

Non-Capturing Group(?:\w+(?::\w+)?@)?

?repeats the group contents below at most once:

\w+any word character, repeated at least once

Non-Capturing Group(?::\w+)?

?repeats the group contents below at most once:

:the literal : (58₁₀ / 72₈ / 3A₁₆)

\w+any word character, repeated at least once

@the literal @ (64₁₀ / 100₈ / 40₁₆)

Non-Capturing Group(?:(?:[a-zA-Z\-][\w+-\.]*)|(?:[\d\.]+))

1st Alternative(?:[a-zA-Z\-][\w+-\.]*)

Non-Capturing Group(?:[a-zA-Z\-][\w+-\.]*)

Character Class[a-zA-Z\-]

a-zone character from a (97₁₀) to z (122₁₀) (case sensitive)

A-Zone character from A (65₁₀) to Z (90₁₀) (case sensitive)

\-the literal - (45₁₀ / 55₈ / 2D₁₆)

Character Class[\w+-\.]*

*matches any number of characters from the set below:

\wany word character

+-\.one character from + (43₁₀) to . (46₁₀)

2nd Alternative(?:[\d\.]+)

Non-Capturing Group(?:[\d\.]+)

Character Class[\d\.]+

+matches at least one character from the set below:

\da digit

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

Non-Capturing Group(?:\/\w[\w\.\/%]+)?

?repeats the group contents below at most once:

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

\wany word character

Character Class[\w\.\/%]+

+matches at least one character from the set below:

\wany word character

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

%the literal % (37₁₀ / 45₈ / 25₁₆)

Non-Capturing Group(?:\?(?:\w+=\w+(?:&\w+=\w+)+))?

?repeats the group contents below at most once:

\?the literal ? (63₁₀ / 77₈ / 3F₁₆)

Non-Capturing Group(?:\w+=\w+(?:&\w+=\w+)+)

\w+any word character, repeated at least once

=the literal = (61₁₀ / 75₈ / 3D₁₆)

\w+any word character, repeated at least once

Non-Capturing Group(?:&\w+=\w+)+

+repeats the group contents below at least once:

&the literal & (38₁₀ / 46₈ / 26₁₆)

\w+any word character, repeated at least once

=the literal = (61₁₀ / 75₈ / 3D₁₆)

\w+any word character, repeated at least once

Non-Capturing Group(?:#\w+)?

?repeats the group contents below at most once:

#the literal # (35₁₀ / 43₈ / 23₁₆)

\w+any word character, repeated at least once

Global pattern flags

g modifier: global. Finds all matches instead of stopping after the first

Search reference

Regular Expression

(?:(?:ftp|https?):\/\/|mailto:)(?:\w+(?::\w+)?@)?(?:(?:[a-zA-Z\-][\w+-\.]*)|(?:[\d\.]+))(?:\/\w[\w\.\/%]+)?(?:\?(?:\w+=\w+(?:&\w+=\w+)+))?(?:#\w+)?

New

ftp://sub.domain
mailto:example@example.com
http://127.0.0.1/index.htm
https://user:password@s--ub.do_main.com/path%20/to/whatever.html?key1=value1&key2=value2#fragment

Regular Expressions 101

Regular Expression

Extraction