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)
\/the literal / (4710 / 578 / 2F16)
Non-Capturing Group(?:www.)? ?repeats the group contents below at most once:
wwwthe literal text www (case sensitive) .any character (except for line terminators)
Negated Character Class[^.]+ +matches at least one character outside the set below:
.the literal . (4610 / 568 / 2E16)
g modifier: global. Finds all matches instead of stopping after the first