What happens with a redirecting URL?

Redirects aren't followed — the headers of the initial response are shown as-is.

Can I check pages that require login?

This tool requests without authentication, so headers only visible after login can't be checked.

Is the URL I look up stored?

No. Every request is looked up immediately and only the result is returned.

📋 HTTP Headers

Check the HTTP response headers a web server sends.

URL

How to use

Enter the URL to check.
Click "Check".
The server's full HTTP response headers are shown.

🎯 Use Cases

Check Cache-Control caching policy
Check the server software or CDN in use
Debug redirects and cookie settings

Example

Input

example.com

Output

HTTP 200
Content-Type: text/html; charset=UTF-8
Cache-Control: max-age=1801
Server: nginx
Content-Length: 1256
…

Entering a URL shows the response status code and the server's full HTTP headers in a table. The values above are an illustrative sample result; actual responses vary by the target server's configuration.

FAQ

What happens with a redirecting URL?: Redirects aren't followed — the headers of the initial response are shown as-is.
Can I check pages that require login?: This tool requests without authentication, so headers only visible after login can't be checked.
Is the URL I look up stored?: No. Every request is looked up immediately and only the result is returned.