Regular Expressions 101

Pro

^start of string

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)

Group 1((w{3}\.)|(w{0}))

1st Alternative(w{3}\.)

Group 2(w{3}\.)

w{3}the literal w (119₁₀ / 167₈ / 77₁₆) (case insensitive), repeated exactly 3 times

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

2nd Alternative(w{0})

Group 3(w{0})

w{0}the literal w (119₁₀ / 167₈ / 77₁₆) (case insensitive), repeated exactly 0 times

\w+any word character, repeated at least once

\.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)

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

Group 4([\S]+)

Character Class[\S]+

+matches at least one character from the set below:

\Sany non-whitespace character

Global pattern flags

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

Detailed match information will be displayed here automatically.

25 tokens

^https?:\/\/((w{3}\.)|(w{0}))\w+\.[a-z]{2,6}\/([\S]+)

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