Regular Expressions 101

Explanation

Pro

httpthe literal text http (case insensitive)

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

:the literal : (58₁₀ / 72₈ / 3A₁₆)

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

Non-Capturing Group(?:www\.)?

?repeats the group contents below at most once:

wwwthe literal text www (case insensitive)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

Group 1([-a-zA-Z0-9@:%._\+~#=]{2,256})

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 insensitive)

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

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)

Group 2(\.[a-z]{2,6}\b)*

*repeats the group contents below any number of times:

\.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 insensitive)

\ban ASCII word boundary

Group 3(\/[\/\d\w\.-]*)*

*repeats the group contents below any number of times:

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

Character Class[\/\d\w\.-]*

*matches any number of characters from the set below:

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

\da digit

\wany word character

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

-the literal - (45₁₀ / 55₈ / 2D₁₆)

Non-Capturing Group(?:[\?])*

*repeats the group contents below any number of times:

Character Class[\?]

\?the literal ? (63₁₀ / 77₈ / 3F₁₆)

Group 4(.+)*

*repeats the group contents below any number of times:

.+any character (except for line terminators), repeated at least once

Global pattern flags

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

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

Match Information

Detailed match information will be displayed here automatically.

Quick Reference

25 tokens

Regular Expression

https?:\/\/(?:www\.)?([-a-zA-Z0-9@:%._\+~#=]{2,256})(\.[a-z]{2,6}\b)*(\/[\/\d\w\.-]*)*(?:[\?])*(.+)*

New

http://wheaton.com/skin/media/main.js
https://wheaton.com/skin/media/main.js
http://www.wheaton.com/skin/media/main.js
https://www.wheaton.com/skin/media/main.js

http://wheaton.com/media/media/main.css
https://wheaton.com/media/media/main.css
http://www.wheaton.com/media/media/main.css
https://www.wheaton.com/media/media/main.css

http://wheaton.com/skin/media/main.png
https://wheaton.com/skin/media/main.jpg
http://www.wheaton.com/skin/media/main.jpeg
https://www.wheaton.com/skin/media/main.gif

http://go.wheaton.com/skin/media/main.png
https://go.wheaton.com/skin/media/main.jpg
http://go.wheaton.com/skin/media/main.jpeg
https://go.wheaton.com/skin/media/main.gif

Substitution

http://wheaton.com/skin/media/main.js
https://wheaton.com/skin/media/main.js
http://www.wheaton.com/skin/media/main.js
https://www.wheaton.com/skin/media/main.js

http://wheaton.com/media/media/main.css
https://wheaton.com/media/media/main.css
http://www.wheaton.com/media/media/main.css
https://www.wheaton.com/media/media/main.css

http://wheaton.com/skin/media/main.png
https://wheaton.com/skin/media/main.jpg
http://www.wheaton.com/skin/media/main.jpeg
https://www.wheaton.com/skin/media/main.gif

http://go.wheaton.com/skin/media/main.png
https://go.wheaton.com/skin/media/main.jpg
http://go.wheaton.com/skin/media/main.jpeg
https://go.wheaton.com/skin/media/main.gif