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HTTP Header Analyzer – Audit Security & SEO Headers

Inspect response headers for CSP, HSTS, caching, and SEO signals with scoring and remediation tips for developers and DevOps teams.

🟢 Runs locally · no uploads

HTTP Header Analyzer

Audit response headers for security, caching, and performance signals.

Live fetch is best-effort. Cross-origin policies may hide headers, so paste `curl -I` or browser devtools output when needed.

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› About this tool · FAQ

Inspect HTTP response headers, spot missing security controls, and get performance & caching recommendations in seconds.

Why do some fetches fail with CORS errors?

Browsers block cross-origin requests to protect users. When this happens, copy the headers from a command-line request (curl -I https://example.com) and paste them into the tool.

Does this tool guarantee complete security coverage?

It highlights common risks based on headers, but a full security review should also check TLS configuration, application behaviour, and server hardening.

Should I remove Server or X-Powered-By headers?

Removing them reduces fingerprinting, but your priority should be patching vulnerabilities. Treat this as defense-in-depth.

Can I analyse API responses too?

Yes—API responses benefit from strict security headers just like web pages. Paste the API response headers or provide the endpoint URL.