Technical SEO Inspector
Developer-focused preflight for title, description, canonical, robots, H1, Open Graph, JSON-LD, sitemap and core delivery signals.
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.