Regular Expressions 101

Explanation
Pro

Positive Lookbehind(?<=expanded_url":")

expanded_url":"the literal text expanded_url":" (case sensitive)

Non-Capturing Group(?:(?!/?").)+

+repeats the group contents below at least once:

Negative Lookahead(?!/?")

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

"the literal " (34₁₀ / 42₈ / 22₁₆)

.any character (except for line terminators)

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

Match Information

Detailed match information will be displayed here automatically.

Quick Reference

25 tokens

Regular Expression

(?<=expanded_url":")(?:(?!/?").)+

New

expanded_url":"https://research.checkpoint.com/ramnits-network-proxy-servers/"
expanded_url":"https://research.checkpoint.com/ramnits-network-proxy-servers"