Technical & Crawl Base
HTTP state, canonical rules, redirect chains, robots.txt, sitemap and indexability checks.
Enter a domain. The full 18-engine scanner executes and presents prioritized evidence.
From basic HTTP responses to generative engine accessibility and structured data integrity.
Does not fabricate Core Web Vitals from raw HTML fetches. Real field data requires CrUX; otherwise returns NOT_MEASURED.
Does not sell false promises or guarantee search engine or ChatGPT ranking outcomes.
Lighthouse evaluates synthetic browser performance on a single URL. HTML&HTML crawls up to 50 pages across 18 deterministic engines including AI crawlers, llms.txt, schema, and security.
Evidence is free so you know what is broken and where. The $99 Yol Haritası provides root causes, implementation order, regression tests, and rollback plans for your engineering team.
Localhost, private IP ranges, cloud metadata endpoints, and redirect pivots into private addresses fail closed before any socket connection.
Do not settle for one score. Find where AI visibility breaks: discovery, understanding, source eligibility, recommendation opportunity or conversion path.
robots.txt, sitemaps, canonicals, indexability and AI crawler access form the discovery foundation.
GEO, AEO, LLMO, entity graphs, schema and answer extractability reduce machine ambiguity.
RAG/retrieval, original information, E-E-A-T, freshness and evidence support source eligibility.
AAO, accessible journeys, intact links, measurable referrals and clear CTAs connect AI discovery to commercial action.
Recommendations, rankings, citations, traffic, customers and revenue are not guaranteed. HTML&HTML measures website-side technical and content blockers; it does not claim control over external AI systems.