HTTP Header Checker
Inspect HTTP response headers of any URL. Check security headers, caching, content type, and more.
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Zenovay
Track your website performance
Real-time analytics, session replay, heatmaps, and AI insights. 2-minute setup, privacy-first.
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Frequently Asked Questions
What are HTTP response headers?▾
HTTP response headers are metadata sent by the server along with a response. They provide information about the server, content type, caching, security policies, and more.
Which security headers should my site have?▾
Key security headers include Strict-Transport-Security (HSTS), Content-Security-Policy (CSP), X-Content-Type-Options, X-Frame-Options, Referrer-Policy, and Permissions-Policy.
What is a good security header score?▾
A score of 80%+ means your site has most important security headers. 100% means all standard security headers are present. Even with all headers, make sure the values are properly configured.
Does this tool make a GET or HEAD request?▾
This tool makes a HEAD request, which returns only the headers without the full page body. This is faster and uses less bandwidth.