HTTP Header Analyzer

What the HTTP headers tool does

Every time a browser loads a page, the server replies with a set of headers that describe the response before the content even arrives. This tool fetches a URL and shows you those headers exactly as they are sent. You can read the status line, content type and caching directives, and you can audit the security headers that quietly defend your site: HSTS forces HTTPS, CSP restricts what can load, X-Content-Type-Options stops MIME sniffing, X-Frame-Options blocks clickjacking, Referrer-Policy controls what referrer data leaks, and Permissions-Policy limits access to browser features.

How to use it

• Enter the full URL you want to inspect.
• Scan the caching headers like Cache-Control and ETag to understand how responses are stored.
• Check for the presence of key security headers and note any that are missing.
• Use the results as a checklist to harden your configuration.

The tool reads the live response, so you see the real headers your visitors receive.

Why it matters

Headers are where a lot of a site's security and performance is either won or lost, and they are invisible in normal browsing. A missing HSTS header leaves room for downgrade attacks. No CSP means a stray script can run unchecked. Weak caching headers slow every repeat visit and waste bandwidth. Reviewing headers is one of the quickest ways to spot easy wins and real risks at once. At Digzy Technology, our studio in Bali, Indonesia, we treat a solid security header set as part of shipping any site, because these small strings protect users without adding weight. Whether you are hardening your own project or reviewing someone else's, seeing the raw headers tells you exactly where you stand.