HTTP Header Inspector
Inspect any URL's real HTTP response headers, redirect chain and security headers (HSTS, CSP, X-Frame-Options) in one fetch. Free, server-side, no CORS limits.
Inspect HTTP headers
Enter a URL. We fetch it server-side and show every response header, the redirect chain and a security audit.
What this HTTP header inspector does
Common use cases
- 1Debugging caching and CDN behaviour
- 2Auditing security headers on a site
- 3Checking redirects and final status codes
- 4Confirming HSTS, CSP and nosniff are set
- 5Inspecting content-type and encoding
- 6Identifying the server and tech stack
Related tools
About HTTP headers
HTTP response headers are the metadata a server sends with every page: the status code, content type, caching rules, the server software, and the security policies that protect visitors. Reading them is the fastest way to understand how a site behaves and whether it is configured safely.
This inspector fetches the URL server-side (so CORS never blocks it) and shows the real headers exactly as returned, follows any redirects to the final destination, and audits the key security headers — HSTS, CSP, X-Content-Type-Options and more. Every value shown is measured live from the actual response, not cached.
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This utility is one of dozens of free, no-login tools for DNS, email, SEO and developers — all instant and private.
HostCloud.in · Pune, India · Serving 34,987+ Websites Since 2020
Got Questions? We Have Answers.
What does the HTTP header inspector show?
It fetches the URL server-side and returns every response header exactly as sent, grouped by security, caching, content and server, along with the redirect chain, status code and real server response time (TTFB).
Which security headers does it audit?
It checks for HSTS (Strict-Transport-Security), CSP (Content-Security-Policy), X-Content-Type-Options, X-Frame-Options, Referrer-Policy and Permissions-Policy, and flags any that are missing.
Why fetch server-side instead of in my browser?
Browsers block cross-origin header reads (CORS), so a client-side fetch cannot see another site's headers. Fetching through our proxy returns the real, complete headers.
Does it follow redirects?
Yes. It traces the full redirect chain and shows each hop's status and URL, ending at the final destination and its status.
Is the data live?
Yes. Every header and timing is measured from the actual response at the moment you run the check — nothing is cached.
Can I see caching and CDN headers?
Yes. Cache-Control, ETag, Age, Vary and CDN headers (like CF-Cache-Status) are shown in the caching and server groups, which is ideal for debugging CDN behaviour.