HTTP Headers Analyzer
Inspect HTTP response headers for any URL. Check security headers, caching policies and content configuration.
Security Headers Checklist
Strict-Transport-Security
Forces HTTPS — prevents protocol downgrade attacks
Content-Security-Policy
Controls what resources can load — prevents XSS
X-Frame-Options
Prevents clickjacking attacks via iframes
X-Content-Type-Options
Prevents MIME-type sniffing attacks
Referrer-Policy
Controls what referrer info is sent
Permissions-Policy
Controls browser features (camera, mic etc)
Why HTTP Headers Matter for Security & SEO
HTTP response headers tell the browser how to handle your web page. Security headers like Content-Security-Policy and Strict-Transport-Security protect users from attacks. Caching headers control how long browsers store your files — properly configured caching can improve PageSpeed scores by 20+ points.
Google considers security as a ranking factor. Sites without HTTPS and missing security headers may rank lower than well-configured competitors. Check your headers regularly and fix any missing critical security headers.