^start of line
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(?:w{3})? ?repeats the group contents below at most once:
w{3}the literal w (11910 / 1678 / 7716) (case sensitive), repeated exactly 3 times
kwagmirethe literal text kwagmire (case sensitive) \.the literal . (4610 / 568 / 2E16)
comthe literal text com (case sensitive) \/the literal / (4710 / 578 / 2F16)
embedthe literal text embed (case sensitive) \/the literal / (4710 / 578 / 2F16)
Character Class[a-zA-Z0-9]+ +matches at least one character from the set below:
a-zone character from a (9710) to z (12210) (case sensitive)
A-Zone character from A (6510) to Z (9010) (case sensitive)
0-9one character from 0 (4810) to 9 (5710)
\/?optionally matches the literal / (4710 / 578 / 2F16)
$end of line
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