HTTP Header Analyzer
HTTP Response Header Analyzer
Paste raw HTTP response headers to see them parsed, explained, and checked for important security headers.
About HTTP Headers
HTTP headers are key/value pairs sent with every HTTP request and response. Response headers tell the browser how to handle the returned content: how long to cache it, what content type it is, which security policies to enforce, and more.
Security-related headers such as Strict-Transport-Security, Content-Security-Policy, X-Frame-Options, and X-Content-Type-Options help protect users against common attacks like cross-site scripting, clickjacking, and protocol downgrade attacks. This analyzer parses the headers you paste, explains the well-known ones, and reports which recommended security headers are present or missing. Learn more in our HTTP Tutorial.
