---
title: "Mobile vs Desktop Speed: 84% of the Top 500 Sites Are Slower on Mobile - PageSpeed Matters"
url: https://www.pagespeedmatters.com/resources/data-studies/mobile-vs-desktop-speed-gap
description: "84% of the top 500 sites load slower on mobile than desktop, and only 44% pass Core Web Vitals on mobile vs 64% on desktop."
lang: en
---

Mobile vs Desktop Speed: 84% of the Top 500 Sites Are Slower on Mobile (https://www.pagespeedmatters.com/resources/data-studies/mobile-vs-desktop-speed-gap)

84% of the top 500 sites load slower on mobile than desktop, and only 44% pass Core Web Vitals on mobile vs 64% on desktop.

Median Interaction to Next Paint (INP): mobile vs desktop, ms

Mobile

188 ms

Desktop

76 ms

Source: PageSpeed Matters analysis of Chrome UX Report data for top 500 Tranco-ranked domains, June 2026.

75th-percentile values; Google's "good" threshold is 200 ms.

Core Web Vitals pass rate: mobile vs desktop (top 500 sites)

Mobile

44%

Desktop

64%

A site passes only when LCP, INP, and CLS are all good at the 75th percentile.

Source: Mobile vs Desktop Speed: 84% of the Top 500 Sites Are Slower on Mobile - PageSpeed Matters (https://www.pagespeedmatters.com/resources/data-studies/mobile-vs-desktop-speed-gap)