^start of line
\d+a digit, repeated at least once
0 objthe literal text 0 obj (case sensitive) Non-Capturing Group(?:(?!^\d+ 0 obj$).)*? *?repeats the group contents below any number of times:
Negative Lookahead(?!^\d+ 0 obj$) ^start of line
\d+a digit, repeated at least once
0 objthe literal text 0 obj (case sensitive) $end of line
.any character
\/the literal / (4710 / 578 / 2F16)
Typethe literal text Type (case sensitive) \s*any whitespace character, repeated any number of times
\/the literal / (4710 / 578 / 2F16)
Pagethe literal text Page (case sensitive) \sany whitespace character
.*?any character, repeated any number of times
endobjthe literal text endobj (case sensitive) $end of line
g modifier: global. Finds all matches instead of stopping after the first
s modifier: single line. Allows a dot to match line terminators
m modifier: multiline. Causes ^ and $ to match the start and end of each line, not only the start and end of the string