HTTP Headers Checker

Perché le persone usano questo strumento

HTTP Headers Checker fetches a public URL from our server and shows the response status, full redirect chain, and every response header — with quick checks for the most important security headers like HSTS, CSP, X-Frame-Options, and Referrer-Policy.

• Verify a redirect chain is short and lands on the expected canonical URL.
• Confirm security headers (HSTS, CSP, X-Frame-Options) are set correctly on a production page.
• Debug caching and CDN behavior by inspecting Cache-Control, ETag, and Vary headers.

Come usarlo

1. 1Enter the full URL you want to inspect, including the protocol.
2. 2Choose GET (sees real-page response) or HEAD (lighter request).
3. 3Review the redirect chain, response status, security-header checklist, and full header list.

Best practices

• Always test the full redirect chain — long chains slow down crawl and waste link equity.
• Make sure HSTS, X-Content-Type-Options, and a CSP are set on production HTML pages.
• Watch for cookies set with Set-Cookie on cross-site responses; missing SameSite=Lax can cause issues.
• Re-check after CDN or hosting changes — a misconfigured cache can override your origin headers.

Common mistakes to avoid

• Do not rely on a single check — staging headers and production headers often differ.
• Do not assume redirects are 301 just because the URL changes; the tool shows the actual status.
• Do not paste URLs containing secrets (tokens in query strings) into any third-party header checker.
• Do not use HEAD when the server responds differently to HEAD vs GET (some apps do).