regex101: R74n URLs

^start of line

Non-Capturing Group(?:https?:\/\/)?

?repeats the group contents below at most once:

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)

Non-Capturing Group(?:[a-z\-]{0,}\.)?

?repeats the group contents below at most once:

Character Class[a-z\-]{0,}

{0,}matches any number of characters from the set below:

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

\-the literal - (45₁₀ / 55₈ / 2D₁₆)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

r74nthe literal text r74n (case insensitive)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

comthe literal text com (case insensitive)

Group 1(\/.{0,})?

?repeats the group contents below at most once:

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

.{0,}any character (except for line terminators), repeated any number of times

$end of line

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

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

Search reference

Regular Expression

^(?:https?:\/\/)?(?:[a-z\-]{0,}\.)?r74n\.com(\/.{0,})?$

Test String
New

https://R74n.com
https://R74n.com/
https://R74n.com/test
https://R74n.com/test/
https://R74n.com/icons/favicon.png
https://www.R74n.com
https://www.R74n.com/
https://www.R74n.com/test
https://www.R74n.com/test/
https://www.R74n.com/icons/favicon.png
https://sandboxels.R74n.com
https://sandboxels.R74n.com/education-use
https://c.R74n.com
R74n.com
R74n.com/
R74n.com/test
R74n.com/test/
R74n.com/icons/favicon.png
www.R74n.com
www.R74n.com/
www.R74n.com/test
www.R74n.com/test/
www.R74n.com/icons/favicon.png

Regular Expressions 101

Regular Expression

Test String
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Extraction
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Regular Expression

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Test String
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