HTTP header analysis

For web teams checking a launch or tracing a fault, this test provides an immediate point of reference. Inspect the HTTP status and response headers returned by a URL.

Inspect the HTTP status and response headers returned by a URL. The result organizes the useful evidence so you can focus the diagnosis.

How to use

Enter the website address, domain name or IP address you want to inspect in the input field.
Launch the test so the YOORfree server can query the target on your behalf.
Read the returned status code and the response headers, grouped by theme.
Compare the details with the expected behavior to spot a redirect, cache rule or security policy.

Example

A site owner preparing a launch wants to confirm that a page responds correctly. They enter the domain, run the analysis and review the returned status, then look at cache and security headers. This helps confirm that the live configuration matches expectations before opening the page to visitors.

Limits and formats

The tool does not change anything on the target site; it only observes the response.
An unreachable, filtered or protected target may block the analysis or return a different result depending on location.
Headers change with CDNs, proxies and server configuration, so interpret the result in context.
No file is accepted or required: the analysis focuses only on the address you request.

Where processing happens

The address, domain or URL you enter is sent to the YOORfree server. That server queries the public DNS or the target site itself, then returns the observed status and headers. No file is uploaded.

Frequently asked questions

Why does the status differ from what my browser shows?

Your browser may use a cache, add headers or follow redirects differently. The tool queries the target from its own environment, so the result can vary with configuration, CDN behavior or access rules.

Can I analyze an IP address without a domain name?

Yes, the field accepts an IP address. The response then depends on the service listening on that address and the default port used for the query. If nothing responds, the result may be empty or report a failure.

Are the security headers shown enough to validate a site?

No. They offer clues about HTTP configuration, but they do not prove content quality or the absence of vulnerabilities. Treat them as a starting point for a fuller diagnosis with other tests.