Analyze the HTTP headers information of an URL.
The HTTP headers checker requests a URL and shows the response headers sent back by the server: Content-Type, Cache-Control, Content-Encoding, the security headers, X-Robots-Tag, cookies and more. Enter a domain or paste any link.
Headers affect speed, security and indexing. Missing caching or compression headers slow a website down, and an X-Robots-Tag: noindex header can silently remove pages from search results.
Every header returned by the server, with its value.
Check Cache-Control, Expires and Content-Encoding.
Look for HSTS, CSP, X-Frame-Options and similar headers.
Spot X-Robots-Tag directives that affect search engines.
HTTP headers are extra information exchanged between the browser and the server along with a request and its response.
It's a header with the same directives as the robots meta tag (noindex, nofollow), also usable for PDFs and images.
Strict-Transport-Security, Content-Security-Policy, X-Content-Type-Options and Referrer-Policy are a good start.
Yes, the headers of the final response are shown.