HTTP Server Header
Inspect response headers returned by a public web server.
HTTP Server Header Check fetches a public URL from the tools server and reports the HTTP response headers returned by that website. Server headers can help diagnose hosting, caching, compression, content type, CDN behavior, and security-related configuration.
HTTP Server Header
Enter the required values and run the tool to view results.
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How to use HTTP Server Header Check
Enter a public HTTP or HTTPS URL and run the tool. The result shows the response status, response time, key header signals, and a complete response-header table. Private, local, and reserved network targets are blocked.
What server response headers show
Response headers are metadata sent by a website or intermediary such as a CDN. Common headers include Server, Content-Type, Cache-Control, Content-Encoding, Strict-Transport-Security, Content-Security-Policy, and cookie-related headers. Some sites intentionally hide or minimize identifying headers.
Important limitations
The result reflects what the website returned to this tools server for the tested request. Headers may differ by geography, CDN edge, HTTP method, cookies, logged-in state, bot handling, user agent, or redirect path. A missing header does not always mean the feature is absent for every visitor.
Server Header Tips
Review caching headers for performance, compression headers for transfer efficiency, and security headers such as HSTS and CSP for browser-side protections. For seeing what your own browser sends to this site, use HTTP Browser Header Check.
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