HTTP Header Checker

View response headers, status codes, and security configuration for any URL.

Audit your whole site, not just headers

RankRebel surfaces technical SEO and security issues across every page you publish.

Start for $7

About the HTTP Header Checker

Every time a browser requests a page, the server answers with a status code and a set of HTTP response headers — instructions that control caching, security, redirects, content type, and more. Those headers are invisible in a normal browser tab but they shape how both users and search engines experience your site.

This checker sends a request to any URL from our servers and shows you exactly what comes back: the final status code, the full redirect chain that got there, every response header, and a focused read on the security headers that protect your visitors.

How to use it

  1. Enter a full URL, including https:// (for example, https://example.com/page).
  2. Press Check. We request the URL from our servers and follow any redirects.
  3. Read the status and redirect chain first — a long or looping chain wastes crawl budget and slows users.
  4. Scan the security headers (HSTS, CSP, X-Frame-Options) to see what is present and what is missing, then review the full header list for caching and content-type details.

Why it matters for SEO

  • Redirect chains dilute link equity and waste crawl budget — a single 301 is fine, but a 301 → 302 → 200 hop costs you on every crawl.
  • The wrong status code (a soft 404 returning 200, or a 302 where a 301 belongs) sends search engines the wrong signal about whether a page should be indexed or consolidated.
  • Security headers like HSTS and Content-Security-Policy protect users from downgrade and injection attacks; their presence is a trust and quality signal, and their absence is a common audit finding.
  • Cache-control and content-type headers affect how fast pages load and render, which feeds directly into Core Web Vitals.

Frequently asked questions

What are HTTP security headers?

They are response headers that tell the browser how to protect the page — for example HSTS forces HTTPS, Content-Security-Policy restricts what scripts can run, and X-Frame-Options prevents clickjacking. They add a layer of defense that does not change how the page looks.

Why does the redirect chain matter for SEO?

Each redirect hop adds latency and bleeds a little ranking signal. Search engines follow chains but prefer a single, direct redirect. Collapsing a multi-hop chain into one 301 speeds users up and preserves link equity.

What status code should a moved page return?

A permanent move should return 301 (or 308), which tells search engines to consolidate signals to the new URL. Use 302/307 only for genuinely temporary redirects — using them for permanent moves prevents consolidation.

Is the HTTP header checker free?

Yes — it is completely free with no sign-up. The request runs from our servers, so it works even on sites that block cross-origin browser requests.

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