🛡️HTTP Security Headers Analyzer

Grade HTTP response headers against the OWASP secure-header baseline — HSTS, CSP, cookie flags, MIME-sniffing, clickjacking — with fixes.

Response headers

Tip: curl -sI https://example.com prints exactly this block. Nothing leaves your browser.

Analysis

Paste a response header block to grade it against the OWASP secure-header baseline (HSTS, CSP, cookies, MIME-sniffing, clickjacking, and info disclosure).

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