HTTP Header Checker
Check the response status, content type, server, cache, cookies and security headers of any URL.
HTTP Header Checker
Enter a URL to see its response status, content type, server, cache and security headers, cookies and the full list of response headers.
About HTTP Header Checker
The HTTP Header Checker fetches any URL and shows its full HTTP response: status code, content type, server, cache headers, cookies and security headers such as HSTS, Content-Security-Policy and X-Frame-Options.
How to use HTTP Header Checker
- Enter the URL you want to inspect.
- Press “Check headers”.
- Review the status, content type, server, cache, cookies and security headers.
Frequently asked questions
What are HTTP response headers?
HTTP response headers are metadata a server returns with a page - such as the status code, content type, caching rules, cookies and security policies - that describe how the response should be handled.
Which security headers does it check?
It surfaces headers like Strict-Transport-Security (HSTS), Content-Security-Policy (CSP), X-Frame-Options, X-Content-Type-Options, Referrer-Policy and Permissions-Policy, among others.
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