HTTP Headers Checker
NewSend a request to any URL and inspect the HTTP response headers. See status codes, Content-Type, Cache-Control, CORS headers, security headers, and more. Useful for debugging caching issues, checking CORS configuration, and verifying security headers.
Enter a URL to inspect its HTTP response headers.
How to Use HTTP Headers Checker
- 1Enter a URL
- 2Click Check Headers
- 3Review all HTTP response headers
Your Privacy is Protected
HTTP Headers Checker runs entirely in your browser. Your files and data are never uploaded to any server, never stored, and never shared. Everything happens locally on your device using secure browser APIs.
No server uploadNo account required100% freeWorks on all devices
Frequently Asked Questions
Why might it fail?
CORS restrictions in the browser prevent reading headers from cross-origin requests. Some URLs may return limited header info.
Why Use This Tool?
Files never leave your device
No upload to any server
Instant processing in browser
100% free, no account needed
Tags
http headersresponse headershttp checkerheader inspectorcors checker