Page speed refers to how quickly a web page loads and becomes fully interactive. It is measured by metrics including Time to First Byte (TTFB), First Contentful Paint (FCP), Largest Contentful Paint (LCP), and Time to Interactive (TTI). Page speed is a direct Google ranking factor and a major determinant of user experience — a 1-second delay in load time reduces conversions by 7%.
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Page Speed Guide
How fast a web page loads and becomes interactive for a user.