HTTP Header Checker
Free online HTTP Header Checker. Simple, fast, and secure tool running in your browser.
What is the HTTP Header Checker?
The HTTP Header Checker is a diagnostic tool designed to retrieve and display the HTTP response headers returned by a web server. It provides visibility into server status codes, caching policies, content types, and security headers (like HSTS and CSP). This tool is critical for SEO professionals and developers looking to verify redirection chains, debug server configurations, and improve website security.
How to Use the HTTP Header Checker
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1
Enter the URL
Type the full URL (including http or https) of the website or API endpoint you wish to inspect.
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2
Fetch Headers
Click the check button to initiate a server request and fetch the corresponding HTTP response headers.
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3
Inspect the Results
Review the status codes, server information, cache-control settings, and identify any missing security headers.
Frequently Asked Questions
Why are HTTP headers important for SEO?
Headers contain status codes (like 301 redirects or 404 errors) which tell search engine bots how to index your pages. Incorrect status codes can harm search rankings.
Can I see headers for redirects?
Yes, if a URL redirects to another page, the tool will typically trace the path and show you the initial 301/302 redirect header followed by the final destination's headers.