Developer ToolsDebugging ToolsFree Tool
HTTP Header Analyzer
Get a pointer to a real HTTP header analysis tool — this page cannot fetch and inspect response headers from an arbitrary URL.
How to Use HTTP Header Analyzer
- 1Enter the URL (optional — it isn't fetched here)
- 2Click Process
- 3Follow the link to a real header-checking tool, or run curl -I yourself
Frequently Asked Questions
No — clicking Process shows a fixed message recommending real tools; it never makes a request to inspect headers.
A browser fetch to an arbitrary third-party site is blocked by CORS unless that site explicitly allows cross-origin reads — which most sites don't for arbitrary pages, making an in-browser header fetch unreliable for general use.
headers.cloxy.net or tools.keycdn.com/curl show real response headers; from your own terminal, `curl -I <url>` gives the same information directly.
No — since no real request happens, nothing you enter is transmitted.
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