Core Web Vitals: Google's speed score, explained.

They are a tiebreaker, not the contest. Great content on a slow page still beats thin content on a fast one. But when content is equal, the faster page wins.

Phones have slower CPUs, slower networks and smaller viewports. Google grades the mobile experience, so always test with a mid-range phone profile, not your office fibre.

Often, yes. Image pipelines, script deferral and font fixes rescue many sites. A rebuild is only needed when the underlying platform fights every optimisation.