Home / HTTP Header Checker
PUBLIC WEB DIAGNOSTIC
HTTP Header Checker
Inspect bounded response headers for a public URL.
Methodology
Request a minimal public response and return selected headers only. Header values are capped to 300 characters.
What the result means
Status plus selected response headers. Treat it as a practical observation rather than a guarantee about every user or provider.
Limitations
Headers change by path and edge location. Unavailable results are reported honestly instead of guessed.
Worked example
For https://example.com, compare cache-control and strict-transport-security to the expected CDN configuration.
FAQ
Are authorization headers sent?
No. Requests are unauthenticated and minimal.