HTTP Header Checker
Inspect the HTTP response headers returned by any public URL and review status, caching, crawler directives, transport and common browser-security headers.
How to use this tool
Enter a full public page URL and run the check. The tool inspects the response received from the server; it does not modify the target website.
Important: A missing optional header is not automatically a problem. Header requirements depend on the site architecture, security model, browser support, caching strategy and deployment.
Use the full public URL, including https://. Localhost, private and reserved IP addresses are blocked.