Inspect HTTP response headers
Inspect status, content type, redirects, cache headers, X-Robots-Tag and other useful HTTP response headers for a public URL.
Inspects the initial public HTTP response without automatically following redirects.
How to use the HTTP Headers Checker
Inspect status, content type, redirects, cache headers, X-Robots-Tag and other useful HTTP response headers for a public URL.
Formula and method
The checker sends a safe HEAD request, falling back to a small GET request when HEAD is unsupported, and displays selected response headers.
Example
Enter an old URL to see whether it returns 301 and a Location header, or inspect an indexable page for X-Robots-Tag and caching headers.
Planning examples
These examples are mathematical scenarios designed to help with planning. They are not claims about typical market performance.
| Use | Recommendation |
|---|---|
| Planning | Use your own recent data whenever possible. |
| Comparisons | Keep the same definition and time period across comparisons. |
| Benchmarks | Treat public benchmarks as context rather than guarantees. |
How to interpret the result
HTTP headers can affect crawling, caching, security and indexing. Review them together with the HTML and final redirect destination.
Frequently asked questions
Does this tool use an external API?
No. The calculation runs from the values you enter.
Is the result a guarantee?
No. It is a mathematical planning result based on your inputs.
Can I use my own real data?
Yes. Your own recent account or business data is usually the best input.
Can I compare different platforms?
Use caution because metric definitions and monetization models can differ by platform.