HTTP Header Analyzer helps you inspect the hidden metadata of a website's response. It reveals security headers, caching policies, server information, and more—crucial for developers, penetration testers, and performance analysts.

What Is an HTTP Header Analyzer?

An HTTP Header Analyzer is a tool that lets you see the response headers a website sends to your browser. Headers are part of every HTTP response and contain important technical details like:

• Server identity
• Cache rules
• Security features
• Content type
• Cookie policies
• Redirects

While they aren’t shown to users, headers are key to how websites work—and how secure they are.

🔍 What Can You Discover?

1. Security Headers
   Check if a site uses:
   • Content-Security-Policy
   • X-Content-Type-Options
   • Strict-Transport-Security
   • X-Frame-Options
2. Caching & CDN Info
   See if assets are cached (Cache-Control, Expires) and served from a CDN (Via, CF-*, Fastly-* headers).
3. Redirect Chains
   Follow 301 or 302 redirects and where they go.
4. Cookie Behavior
   Validate Set-Cookie values and attributes like Secure and HttpOnly.
5. Server Disclosure
   Detect if the site reveals its backend tech (e.g., Server: nginx or X-Powered-By: PHP/8.2).

🛡 Why It Matters in Cybersecurity

• Exposed headers = fingerprinting risk
• Missing headers = potential exploits
• Overexposed cookies = session hijack targets
• Improper redirects = phishing setups
• Open CORS or weak CSP = XSS playgrounds

🧠 Example Output

Header NameSample ValueServer | nginx
X-Frame-Options | SAMEORIGIN
Content-Security-Policy | default-src 'self';
Set-Cookie | sessionid=xyz; HttpOnly; Secure
Location (Redirect) | https://www.example.com/home

💡 Dev Tip

Use this tool to audit your own website and see what you're exposing unintentionally. It’s also great for penetration testing and competitor analysis.

🧩 Final Thoughts

Your website might be saying more than you think—hidden in its headers. An HTTP Header Analyzer gives you deep visibility into how a web server communicates, secures, and handles requests. Use it for hardening, debugging, or simply staying ahead.

Read the headers. Fix the risks. Strengthen your stack.