Site quality is a holistic measure of how well a website serves its visitors, covering content depth, technical reliability, user experience, and trust signals — all factors that both search engines and human users use to evaluate whether a site deserves to rank, be recommended, or be revisited. High site quality manifests as: thorough, accurate content that fully answers the questions visitors arrive with; fast, stable page loading that meets Core Web Vitals thresholds; consistent mobile-first design; a clean link profile; transparent authorship and editorial standards; and clear business identification. Low site quality signals include thin content, high bounce rates, slow TTFB, intrusive ads that obscure content, and pages created to rank rather than to help. Google's Search Quality Evaluator Guidelines measure site quality via E-E-A-T (Experience, Expertise, Authoritativeness, Trustworthiness), and technical assessments correlate Lighthouse scores, Core Web Vitals, and crawl error rates with overall quality posture.
Glossary entry
