Inspect HTTP Response Headers for any URL. Analyze status codes, content types, and critical Security Headers (CSP, HSTS) to ensure your server is configured correctly.
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| Header Name | Value |
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HTTP headers carry vital information about the connection between a browser and a server. They control caching, content encoding, and critical security policies. Misconfigured headers can lead to security vulnerabilities or poor website performance.
Directs the browser on how long to cache the page assets. Proper configuration speeds up load times for returning visitors.
Indicates compression methods (like Gzip or Brotli). Compressed content transfers faster over the network.
Essential for SysAdmins.
When building APIs, verifying CORS headers (`Access-Control-Allow-Origin`) and content types (`application/json`) is crucial. This tool lets you quickly inspect the server's response metadata.
Inspect raw server responses.
Browsers block scripts from reading headers of different domains unless the server allows it. If you see this error, the target website has not enabled Cross-Origin Resource Sharing for public tools.
The `Server` header identifies the software powering the web server (e.g., Nginx, Apache, Cloudflare). For security, some admins choose to hide or obscure this info.