Regular Expressions 101

Group 1((http(s)?[:\/\/]{1,}))?

?repeats the group contents below at most once:

Group 2(http(s)?[:\/\/]{1,})

httpthe literal text http (case insensitive)

Group 3(s)?

?repeats the group contents below at most once:

sthe literal s (115₁₀ / 163₈ / 73₁₆) (case insensitive)

Character Class[:\/\/]{1,}

{1,}matches at least one character from the set below:

:the literal : (58₁₀ / 72₈ / 3A₁₆)

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

Group 4([a-z0-9\-]{1,}[.])

Character Class[a-z0-9\-]{1,}

{1,}matches at least one character from the set below:

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

0-9one character from 0 (48₁₀) to 9 (57₁₀)

\-the literal - (45₁₀ / 55₈ / 2D₁₆)

Character Class[.]

.the literal . (46₁₀ / 56₈ / 2E₁₆)

Group 5([a-z0-9\-]{1,}[.])?

?repeats the group contents below at most once:

Character Class[a-z0-9\-]{1,}

{1,}matches at least one character from the set below:

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

0-9one character from 0 (48₁₀) to 9 (57₁₀)

\-the literal - (45₁₀ / 55₈ / 2D₁₆)

Character Class[.]

.the literal . (46₁₀ / 56₈ / 2E₁₆)

Group 6([a-z]{2,3})

Character Class[a-z]{2,3}

{2,3}matches between 2 and 3 characters from the set below:

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

Group 7(.{1,})?

?repeats the group contents below at most once:

.{1,}any character (except for line terminators), repeated at least once

Global pattern flags

i modifier: insensitive. Matches without distinguishing uppercase and lowercase letters

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

Detailed match information will be displayed here automatically.

Search reference

Regular Expression

((http(s)?[:\/\/]{1,}))?([a-z0-9\-]{1,}[.])([a-z0-9\-]{1,}[.])?([a-z]{2,3})(.{1,})?

New

http://example.com

http://subdom.example.com

http://example.uk

https://example.com

https://subdom.example.com

https://example.uk

http://example.com/?query=butt

http://subdom.example.com/?query=butt

http://example.uk/?query=butt

https://example.com/?query=butt

https://subdom.example.com/?query=butt

https://example.uk/?query=butr

tasdfa .ss