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Free HTTP Header Checker - Security & SEO Headers

Paste any URL to fetch live response headers. Review status, timing, HSTS/CSP and related security headers, plus SEO signals like X-Robots-Tag - no signup.

Technical SEO

Inspect HTTP response headers

Paste a URL to see status, timing, HTTPS, security headers, and the full response header table - useful before launches and HTTPS cutovers.

We fetch the URL (following redirects) and list response headers plus a quick security-header checklist.

How to use

How to use HTTP Headers

  1. 1

    Paste a URL

    Enter https://example.com or a deep path you care about.

  2. 2

    Inspect headers

    We fetch the URL, follow redirects, and list every response header plus a security checklist.

  3. 3

    Fix gaps

    Add missing HSTS/CSP (carefully) and confirm X-Robots-Tag is not blocking indexation.

Guide

Which HTTP headers matter before launch

Security headers (HSTS, CSP, X-Content-Type-Options, frame controls) reduce common browser attacks and are often checked in directory and enterprise reviews.

X-Robots-Tag can noindex a URL even when the HTML looks fine - always verify headers on staging vs production before you submit directories.

Pair this checker with the redirect and canonical tools so the final URL you promote has the headers you expect.

Explore more on free ScrollLaunch tools, browse DR-ranked directories, or launch with a dofollow backlink.

Questions

HTTP Headers FAQ

What is an HTTP header checker?

It fetches a public URL and lists the response headers the server returns - status line, security headers, caching, and SEO-related headers like X-Robots-Tag.

Which security headers should I look for?

Common ones include Strict-Transport-Security (HSTS), Content-Security-Policy, X-Content-Type-Options, X-Frame-Options, Referrer-Policy, Permissions-Policy, and Cross-Origin opener/resource policies.

Does this follow redirects?

Yes - we follow redirects and report the final URL. For a hop-by-hop chain, use the redirect checker.

How does this help with SEO?

Headers reveal indexing controls (X-Robots-Tag), caching, content type, and whether the final URL is HTTPS - all signals you want clean before a product launch.

Are private or localhost URLs supported?

No. Only public http(s) hosts are allowed. Localhost, private IPs, and blocked hostnames are rejected for safety.

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Free SSL checker - certificate validity, expiry, issuer, and SAN names.

Redirect Checker

Free redirect checker - trace 301/302/307/308 chains, meta refresh, and the final landing URL.

Canonical URL Checker

Free canonical URL checker - verify <link rel="canonical"> matches the final URL.

robots.txt Tester

Free robots.txt tester - fetch live rules, list sitemaps, and test if a path is allowed.