How do I view the HTTP headers of a URL?

Enter the URL to fetch and display its complete HTTP response headers.

What are HTTP headers?

HTTP headers are metadata sent with every web request and response — they carry the status code, content type, caching rules, and security policies.

Why check HTTP headers?

Headers reveal redirects, caching misconfigurations, missing security policies, and content-type problems that affect SEO and security.

DNS & NETWORK TOOLS · FREE ONLINE TOOL

HTTP Headers Checker

See every HTTP header a website sendsEvery time your browser loads a site, the server sends invisible instructions alongside the page: caching rules, security policies, redirects. This checker fetches any URL and lays those headers bare.

✓ Free to use✓ No sign-up✓ Ready in your browser

// HTTP HEADERS CHECKER · GET STARTED

Use HTTP Headers Checker

See every HTTP header a website sends

// HTTP HEADERS CHECKER · HOW IT WORKS

How to use the HTTP Headers Checker

Enter URL

Enter the URL whose headers you want to see.

Fetch headers

Click "Fetch Headers" to request it live.

Inspect results

Browse every header with its explanation, hop by hop.

// HTTP HEADERS CHECKER · ABOUT THIS TOOL

About the HTTP Headers Checker

Headers carry the hidden configuration of the web: cache lifetimes, content encoding, security policies, cookies and server fingerprints. This tool requests your URL like a browser would, follows the redirect chain, and lays out every response header with a clear explanation of the important ones.

Developers use it to debug caching and CORS issues, SEOs use it to verify canonicals and robots directives, and the curious use it to see what servers reveal about themselves.

Where it helps most

Who reads headers and why.

Post-deploy verification

Web developers confirm security headers survived every release before moving on.

SEO diagnostics

Specialists check status codes and redirect headers when diagnosing crawl issues or tangled redirect chains.

Security audits

Auditors run it as a first pass over client sites, since missing HSTS or a permissive CSP take seconds to spot here.

Debugging differences

When a page behaves differently in production than in development, comparing headers often reveals the caching layer or proxy behind it.

What you see

One request, full transparency.

Full response

The status code, every header in a readable list, and the redirect chain if the URL bounces before landing.

Security header evaluation

Strict-Transport-Security, Content-Security-Policy and X-Frame-Options are evaluated, with missing ones flagged and explained.

Server context

Server and technology headers are shown too, useful context for what a site runs on.

HTTP Headers Checker: built for trust

One live request, full transparency. No browser devtools required, no signup needed.

// HTTP HEADERS CHECKER · COMMON QUESTIONS

HTTP Headers Checker FAQs

What are HTTP security headers?

They are response headers that instruct browsers to enforce protections: HSTS forces HTTPS, CSP restricts which scripts can run, X-Frame-Options blocks clickjacking, and X-Content-Type-Options stops MIME sniffing. This tool checks which ones a site sends.

How do I check the HTTP headers of a website?

What does a missing Content-Security-Policy mean?

Why does my site show the server version in headers?

Can I see redirect chains with this tool?

tools-guide

Security Headers Checker: Grade Your Site's Defenses

Free security headers checker. Instantly scan HSTS, CSP, X-Frame-Options and more on any site, get an A to F grade and clear steps to fix every website gap.

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