Regex Editor & Tester

Matches any complete line containing HTTP cookie-related indicators such as Set-Cookie: or Cookie: headers, HTTP response markers like HTTP or 200 OK, or JavaScript's document.cookie (with an optional dot). With global multiline flags, it scans files or logs line by line. Commonly used for security auditing, detecting session/cookie leakage in captured traffic, web server log analysis, and identifying XSS-related payload references.