Regular Expressions 101

Pro

Group 1(url\()

urlthe literal text url (case sensitive)

\(the literal ( (40₁₀ / 50₈ / 28₁₆)

Negative Lookahead(?!https?://www\.google\.com)

httpthe literal text http (case sensitive)

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

://wwwthe literal text ://www (case sensitive)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

googlethe literal text google (case sensitive)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

comthe literal text com (case sensitive)

Group 2(')?

?repeats the group contents below at most once:

'the literal ' (39₁₀ / 47₈ / 27₁₆)

/?optionally matches the literal / (47₁₀ / 57₈ / 2F₁₆)

Group 3([^()']*)

Negated Character Class[^()']*

*matches any number of characters outside the set below:

(the literal ( (40₁₀ / 50₈ / 28₁₆)

)the literal ) (41₁₀ / 51₈ / 29₁₆)

'the literal ' (39₁₀ / 47₈ / 27₁₆)

Group 4((?(2)')\))

Condition(?(2)')

Uses the first branch if group 2 matched

If the condition is true, match this branch:'

'the literal ' (39₁₀ / 47₈ / 27₁₆)

\)the literal ) (41₁₀ / 51₈ / 29₁₆)

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

Detailed match information will be displayed here automatically.

25 tokens

Regular Expression

(url\()(?!https?://www\.google\.com)(')?/?([^()']*)((?(2)')\))

New

url(https://www.google.com)
url('Inter-Black.ttf')
url(Inter-Black.ttf)
url('Inter-Black.ttf)
url('/fonts/user/Inter-Black.ttf')
url('/fonts/user/mywebsite/Inter-Black.ttf')

Extraction

url(https://www.google.com)
url('Inter-Black.ttf')
url(Inter-Black.ttf)
url('Inter-Black.ttf)
url('/fonts/user/Inter-Black.ttf')
url('/fonts/user/mywebsite/Inter-Black.ttf')