Pagespeed
Pagespeed is the load speed of a web page, directly tied to user experience, conversion and ranking through Core Web Vitals.
Pagespeed is more than one number — it spans Time To First Byte (server response), First Contentful Paint, Largest Contentful Paint, Total Blocking Time and more. Google studies show each 100ms of delay can reduce conversion by 7%. For SEO it matters via CWV as a ranking signal.
Example
A travel site with 4.8s load time lost 40% of mobile visitors before first paint. After image optimisation, HTTP/2, a CDN and lazy loading, load time drops to 1.9s — and conversion rises 28%.
Frequently asked questions
Which tool measures pagespeed correctly?
PageSpeed Insights (lab + field), WebPageTest (deeper), Lighthouse (developer), Chrome DevTools (debug). For production monitoring: Calibre, SpeedCurve, Sentry Performance.
Related terms
Further reading
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