What is Server Response Headers Checker?
Server Response Headers Checker inspects HTTP response headers (Cache-Control, Server, Content-Type, Security Headers).
How to use Server Response Headers Checker
Enter any web URL to inspect response headers and HTTP status codes.
Key features
- Inspects HTTP response headers and security directives
- 100% client-side operation
Common use cases
- Auditing web server security headers (HSTS, CSP, X-Frame-Options)
Technical details & standards
Fetches response headers using client-side network requests.
Frequently asked questions
Which security headers should web servers set?
Recommended headers include Content-Security-Policy, Strict-Transport-Security, and X-Content-Type-Options.
Is my data safe?
All processing happens entirely in your browser. Your data never leaves your device and is never sent to or stored on a server.
Does it work offline?
Yes. Once the page has loaded, most tools keep working without an internet connection.