Network tool
Security Headers Checker
Inspect important browser security headers on a public HTTP or HTTPS response.
What this result means
HTTP security headers instruct browsers how to handle content, framing, transport, referrer information, and cross-origin behavior.
How this check works
The server fetches the public URL, follows a small bounded redirect chain, and inspects final response headers. It does not execute JavaScript, log in, scan ports, or exploit vulnerabilities.
Missing headers do not prove a vulnerability, and present headers do not prove a site is secure. Application logic, cookies, TLS, dependencies, server configuration, and content also matter.