Free SEO Tool
Free HTTP Header Checker
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Enter a URL to see its status code, every redirect hop and the full list of response headers, with security and SEO headers checked.
What the server says before the page loads
HTTP response headers tell browsers and crawlers how to treat a URL: its status, where it redirects, how long to cache it, whether to index it and which security rules apply. This tool requests the URL from our server, follows redirects one hop at a time and shows every header returned.
Security headers (HSTS, CSP, X-Frame-Options and others) and SEO headers (X-Robots-Tag, Link, Cache-Control) are listed as present or missing.
The final status plus the code for every redirect hop.
Every response header in a sortable table.
Six common security headers marked present or missing.
X-Robots-Tag, Link canonical and caching headers.
About the header checker
Status code
Included
The final status plus the code for every redirect hop.
All headers
Included
Every response header in a sortable table.
Security check
Included
Six common security headers marked present or missing.
SEO headers
Included
X-Robots-Tag, Link canonical and caching headers.
How it works
Check headers in three steps
Request the URL, follow redirects, read the headers.
01
Enter a URL
Any public http or https address, including redirects.
02
Choose GET or HEAD
GET matches a normal visit; HEAD asks for headers only.
03
Review the result
Check the redirect chain, status and missing headers.
Header checker features for technical SEO
Status, redirects and headers in one request.
Redirect chain
Each hop with its status code, so you can spot chains and loops.
Security headers
HSTS, CSP, X-Content-Type-Options, X-Frame-Options, Referrer-Policy, Permissions-Policy.
X-Robots-Tag
Catch noindex directives sent as headers.
Copy headers
Copy the raw header list for tickets or docs.