regex101: URL

Pro

Group 1(https?:\/\/)

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)

Group 2((?:[-a-zA-Z0-9@:%._+~#=]+)\.)?

?repeats the group contents below at most once:

Non-Capturing Group(?:[-a-zA-Z0-9@:%._+~#=]+)

Character Class[-a-zA-Z0-9@:%._+~#=]+

+matches at least one character from the set below:

-the literal - (45₁₀ / 55₈ / 2D₁₆)

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

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

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

@the literal @ (64₁₀ / 100₈ / 40₁₆)

:the literal : (58₁₀ / 72₈ / 3A₁₆)

%the literal % (37₁₀ / 45₈ / 25₁₆)

.the literal . (46₁₀ / 56₈ / 2E₁₆)

_the literal _ (95₁₀ / 137₈ / 5F₁₆)

+the literal + (43₁₀ / 53₈ / 2B₁₆)

~the literal ~ (126₁₀ / 176₈ / 7E₁₆)

#the literal # (35₁₀ / 43₈ / 23₁₆)

=the literal = (61₁₀ / 75₈ / 3D₁₆)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

Group 3([-a-zA-Z0-9@:%._+~#=]{2,256}\.[a-z]{2,6}\b|localhost(?:\:\d{1,5})?)

1st Alternative[-a-zA-Z0-9@:%._+~#=]{2,256}\.[a-z]{2,6}\b

Character Class[-a-zA-Z0-9@:%._+~#=]{2,256}

{2,256}matches between 2 and 256 characters from the set below:

-the literal - (45₁₀ / 55₈ / 2D₁₆)

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

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

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

@the literal @ (64₁₀ / 100₈ / 40₁₆)

:the literal : (58₁₀ / 72₈ / 3A₁₆)

%the literal % (37₁₀ / 45₈ / 25₁₆)

.the literal . (46₁₀ / 56₈ / 2E₁₆)

_the literal _ (95₁₀ / 137₈ / 5F₁₆)

+the literal + (43₁₀ / 53₈ / 2B₁₆)

~the literal ~ (126₁₀ / 176₈ / 7E₁₆)

#the literal # (35₁₀ / 43₈ / 23₁₆)

=the literal = (61₁₀ / 75₈ / 3D₁₆)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

Character Class[a-z]{2,6}

{2,6}matches between 2 and 6 characters from the set below:

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

\ban ASCII word boundary

2nd Alternativelocalhost(?:\:\d{1,5})?

localhostthe literal text localhost (case sensitive)

Non-Capturing Group(?:\:\d{1,5})?

?repeats the group contents below at most once:

\:the literal : (58₁₀ / 72₈ / 3A₁₆)

\d{1,5}a digit, repeated between 1 and 5 times

Group 4(\/[\w.-]*)*

*repeats the group contents below any number of times:

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

Character Class[\w.-]*

*matches any number of characters from the set below:

\wany word character

.the literal . (46₁₀ / 56₈ / 2E₁₆)

-the literal - (45₁₀ / 55₈ / 2D₁₆)

Group 5(\?[\w\-._~!*'(),%=&+]*)?

?repeats the group contents below at most once:

\?the literal ? (63₁₀ / 77₈ / 3F₁₆)

Character Class[\w\-._~!*'(),%=&+]*

*matches any number of characters from the set below:

\wany word character

\-the literal - (45₁₀ / 55₈ / 2D₁₆)

.the literal . (46₁₀ / 56₈ / 2E₁₆)

_the literal _ (95₁₀ / 137₈ / 5F₁₆)

~the literal ~ (126₁₀ / 176₈ / 7E₁₆)

!the literal ! (33₁₀ / 41₈ / 21₁₆)

*the literal * (42₁₀ / 52₈ / 2A₁₆)

'the literal ' (39₁₀ / 47₈ / 27₁₆)

(the literal ( (40₁₀ / 50₈ / 28₁₆)

)the literal ) (41₁₀ / 51₈ / 29₁₆)

,the literal , (44₁₀ / 54₈ / 2C₁₆)

%the literal % (37₁₀ / 45₈ / 25₁₆)

=the literal = (61₁₀ / 75₈ / 3D₁₆)

&the literal & (38₁₀ / 46₈ / 26₁₆)

+the literal + (43₁₀ / 53₈ / 2B₁₆)

Group 6($|\#.*|\?.*)?

?repeats the group contents below at most once:

1st Alternative$

$end of line

2nd Alternative\#.*

\#the literal # (35₁₀ / 43₈ / 23₁₆)

.*any character (except for line terminators), repeated any number of times

3rd Alternative\?.*

\?the literal ? (63₁₀ / 77₈ / 3F₁₆)

.*any character (except for line terminators), repeated any number of times

Global pattern flags

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

m modifier: multiline. Causes ^ and $ to match the start and end of each line, not only the start and end of the string

26 tokens

Regular Expression

(https?:\/\/)((?:[-a-zA-Z0-9@:%._+~#=]+)\.)?([-a-zA-Z0-9@:%._+~#=]{2,256}\.[a-z]{2,6}\b|localhost(?:\:\d{1,5})?)(\/[\w.-]*)*(\?[\w\-._~!*'(),%=&+]*)?($|\#.*|\?.*)?

New

https://www.google.com/search?q=define+inherently&oq=&gs_lcrp=EgZjaHJvbWUqBggCEEUYOzIGCAAQRRg5Mg4IARBFGCcYOxiABBiKBTIGCAIQRRg7Mg8IAxAAGEMYyQMYgAQYigUyDAgEEAAYQxiABBiKBTIMCAUQABhDGIAEGIoFMg0IBhAAGJIDGIAEGIoFMg0IBxAAGJIDGIAEGIoFMgcICBAAGIAEMgcICRAAGI8C0gEJNjY1MGowajE1qAIAsAIA&sourceid=chrome&ie=UTF-8#shebang