HTTP Headers
Inspect HTTP response headers: HSTS, CSP, X-Frame-Options, and more. Free security header analyzer.
About this HTTP Headers tool
CheckHub fetches a URL and lists every response header, flagging missing security headers like HSTS, CSP, X-Content-Type-Options, and Referrer-Policy.
How to use the HTTP Headers
- Step 1. Enter a URL.
- Step 2. Read the header list and the security score for missing protections.
Frequently asked questions
- Which security headers matter most?
- HSTS, Content-Security-Policy, X-Content-Type-Options, Referrer-Policy, and Permissions-Policy give the biggest defense-in-depth wins.
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