HTTP Headers Checker

Analyze server response headers and security configurations of any URL.

Enter a URL above to analyze its response headers.

Understanding HTTP Headers

HTTP headers are the core of communication between a client (your browser) and a server. They contain metadata about the request or response, including content type, server software, caching policies, and critical security instructions.

Status Codes

Response codes like **200 OK**, **301 Moved Permanently**, or **404 Not Found** indicate the result of the request and are vital for SEO auditing.

Security Headers

Modern web security relies on headers like **Content-Security-Policy (CSP)**, **HSTS**, and **X-Frame-Options** to prevent attacks.

Why Check HTTP Headers?

For web developers and SEO specialists, an **HTTP Header Checker** is indispensable for debugging server redirections, verifying SSL configurations, and ensuring that assets are correctly cached via `Cache-Control` headers.