Web Performance Scanner
It does not replace Lighthouse; it provides a fast preflight of server response and document-level performance risks.
Reads public HTML, HTTP headers, robots.txt, sitemap and advisory-file signals. Response bodies are bounded; JavaScript is not executed and private areas are not accessed.
The tool does not invent what it cannot observe.
The performance preflight is not Core Web Vitals. JSON-LD is preflighted against common documented Google properties, not the official Rich Results Test. Static accessibility signals are not axe/WCAG conformance.