Secure Header Analyzer & Prettifier

Parse raw HTTP headers and HTML source into a local security, performance, and SEO audit dashboard.

OWASP / NIST checks
Heading hierarchy audit
Core Web Vitals heuristics
AES-GCM share links
Raw Inputs
Parsed Header Dashboard
Semantic Hierarchy Tree
What-If Security Simulation

Toggle a header below to simulate its removal from the current audit.

strict-transport-security
content-security-policy
x-content-type-options
Security & SEO Findings