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Website & Network Tools

HTTP Header Checker

See the full HTTP response headers any URL returns.

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How to use the HTTP Header Checker

  1. Enter a URL (for example example.com).
  2. Click Check headers.
  3. Read the status, redirects and every response header.

About the HTTP Header Checker

Every time a server answers a request it sends back a set of HTTP response headers — behind-the-scenes instructions that control caching, security, content type, cookies and more. This tool fetches a URL from our server and shows you all of them, along with the status code, the server IP it connected to, the response time, and any redirects that happened on the way.

Reading the headers is how you answer a lot of practical questions. Is the page cached, and for how long (Cache-Control, Expires)? Are the security headers in place (Strict-Transport-Security, Content-Security-Policy, X-Content-Type-Options)? What server and CDN is it on (Server, Via)? Is compression on (Content-Encoding)? It is one of the first things to check when a page behaves unexpectedly.

The request is made server-side with a normal browser-like user agent, so you see what a plain visitor gets. For the status code and redirect chain on their own, use the HTTP status checker; to read the page's SEO tags, use the meta tags analyzer. Private and internal addresses are blocked for safety.

Frequently asked questions

What are HTTP response headers?

They are metadata a server sends with a page — controlling caching, security, content type, cookies and compression — separate from the page content itself.

Which headers matter for security?

Look for Strict-Transport-Security, Content-Security-Policy, X-Content-Type-Options and X-Frame-Options. Their presence and values tell you how hardened the site is.

Does it follow redirects?

Yes. It follows the redirect chain and shows each hop, then displays the headers of the final destination.

Can I check any URL?

Any public http or https URL. Requests to private, local or internal addresses are blocked to prevent misuse.

Why might a site show different headers to me?

Headers can vary by user agent, location, cookies or CDN node. This tool fetches from our server with a standard user agent, so results reflect that request.

Guides & articles about this tool

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HTTP Status Code Checker Check a URL's HTTP status code and follow its full redirect chain. Meta Tags Analyzer Check a page's title, description and other SEO meta tags. Open Graph Checker See the Open Graph and Twitter Card tags a page uses when shared. What Is My User Agent See your browser's user agent string and the device details it reveals. Domain to IP Find the IP address (or addresses) a domain points to. Website to IP See the IP address behind a website, who it belongs to, and what is serving it.