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)
\S+any non-whitespace character, repeated at least once
Non-Capturing Group(?:png|jpe?g|gif) pngthe literal text png (case insensitive) jpthe literal text jp (case insensitive) e?optionally matches the literal e (10110 / 1458 / 6516) (case insensitive)
gthe literal g (10310 / 1478 / 6716) (case insensitive)
gifthe literal text gif (case insensitive) \S*any non-whitespace character, repeated any number of times