Inspect a public response
Response headers reveal caching, content type, redirects, security policy, and server/CDN behavior.
Input
https://example.comOutput
Status, final URL, and response headersNetwork toolsUses API
Public HTTP Headers Checker
Inspect status and response headers for public HTTP and HTTPS URLs when debugging caching, content type, redirects, and deployment behavior.
headersnetworkhttpsecurity
Privacy note: this tool uses a server request for public network checks; do not enter private URLs. How privacy works
Header request
Headers
Response headers will appear here.
Headers Checker examples
Headers Checker use cases
- Check whether a CDN or proxy is sending the expected headers.
- Debug content type, cache-control, or redirect responses.
- Capture header evidence for a deployment ticket.
How Headers Checker works
- The API fetches the public URL from the server side.
- Private, local, reserved, and credentialed URLs are blocked.
- The response status and headers are returned for inspection.
Headers Checker mistakes to avoid
- Browser devtools can hide intermediate redirect headers unless preserved.
- Header names are case-insensitive.
- A public checker should not be used for private intranet URLs.
Headers Checker privacy and processing
Public URLs onlyPrivate hosts blockedNo accountThis tool uses a server request for public URL checks. Enter public HTTP or HTTPS URLs only; private, local, reserved, and credentialed hosts are blocked.
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Headers Checker FAQ
Why does this need an API request?
Browsers cannot reliably fetch arbitrary public headers because of CORS and networking restrictions.
Can I check private URLs?
No. The checker is designed for public HTTP and HTTPS URLs only.