51.4%
of mobile origins had good LCP, INP, and CLS experiences together.
May 2026 field data for origins with enough eligible Chrome traffic.
§ InsightsWebsite speed
Website speed statistics for 2026.
The lead numbers below come from real Chrome users, not a one-off lab run. Lab data appears only where it is labeled. Business-impact findings keep their sector, study design, and correlation caveats attached.
15 sourced findings · 3 sections · Updated July 13, 2026
01Real-world Chrome data
About half of origins pass all three Core Web Vitals on mobile.
The Chrome UX Report aggregates field experience from eligible Chrome users. HTTP Archive's May 2026 report makes the mobile and desktop gap visible without pretending a single test represents every visitor.
58.9%
of desktop origins passed all three Core Web Vitals together.
+5.3 pts
improvement in the mobile all-vitals pass rate from January 2025 to May 2026.
The report moved from 46.1% to 51.4%. This is a percentage-point change, not a 5.3% relative increase.
12.1%
of mobile origins had poor Largest Contentful Paint above four seconds; desktop was 6.3%.
7.8%
of mobile origins had poor Cumulative Layout Shift above 0.25, compared with 10.0% on desktop.
33.5%
of mobile origins reached DOMContentLoaded within one second, compared with 54.0% on desktop.
02Google's thresholds
Good is defined at the 75th percentile, not by your best test.
Core Web Vitals cover loading, responsiveness, and visual stability. Google recommends meeting all three at the 75th percentile of page loads, separately for mobile and desktop.
≤2.5s
is Google's good-experience threshold for Largest Contentful Paint.
≤200ms
is the good-experience threshold for Interaction to Next Paint.
≤0.1
is the good-experience threshold for Cumulative Layout Shift.
75th
percentile is where Google recommends evaluating each metric across page loads.
A fast developer laptop or a single Lighthouse run cannot establish this field percentile.
03Business context
Speed can move behavior, but the effect is not one universal conversion rate.
A Deloitte study found commercial changes after mobile speed improvements in specific sectors. A separate 2026 crawl found severe mobile gaps in one small-business sample. Both are useful when their limits remain visible.
+8%
retail conversion-rate change associated with a 0.1-second improvement in mobile site speed.
A multi-brand retail study, not a promise that every website gains 8%. Association in the study should not be rewritten as a universal causal effect.
+9.2%
average-order-value change associated with the same 0.1-second improvement for retail sites in the study.
+8%
page-view change per session associated with a 0.1-second improvement for luxury sites in the study.
27.7%
of 191 valid mobile Lighthouse tests in Axion's small-business sample scored below 50.
Non-random B2B prospect sample; lab scores are diagnostic and are not equivalent to CrUX field data.
Axion Deep Digital — State of Small Business Websites · 2026
6.3%
of those valid mobile Lighthouse tests scored 90 or higher.
Axion Deep Digital — State of Small Business Websites · 2026
What this data does not prove
CrUX and Lighthouse are not interchangeable. CrUX reports real-user experience over time. Lighthouse simulates a controlled visit. Both are useful, but a lab score cannot overwrite field data.
Core Web Vitals are not a standalone ranking guarantee. Google says they align with page experience. Relevance, content quality, links, and the rest of the search system still matter.
The commercial findings are sector-specific. The Deloitte results came from retail and luxury mobile journeys. They support the case for testing speed, not a guaranteed revenue formula for every business.
04FAQ
Common questions
What percentage of websites pass Core Web Vitals in 2026?
HTTP Archive's May 2026 Chrome UX Report showed 51.4% of mobile origins and 58.9% of desktop origins had good LCP, INP, and CLS experiences together.
What are the current Core Web Vitals thresholds?
Google's good thresholds are LCP at or below 2.5 seconds, INP at or below 200 milliseconds, and CLS at or below 0.1, evaluated at the 75th percentile of page loads.
Does website speed affect SEO?
Core Web Vitals are part of Google's page-experience systems, but they are not a standalone ranking guarantee. A faster page does not make irrelevant content relevant.
Does a faster website always increase conversions?
No universal percentage applies. Deloitte found meaningful associations in retail and luxury mobile journeys, but the size of the effect depends on the audience, sector, page, device mix, and change made.
05Sources & method
HTTP Archive publishes monthly distributions from the Chrome UX Report. Google defines the thresholds. The Deloitte study provides sector-specific commercial context, while the Axion sample shows how a non-random set of small-business sites performed in Lighthouse tests.
- HTTP Archive — Chrome UX Report — monthly origin-level field distributions
- Chrome for Developers — Chrome UX Report — dataset definitions and eligibility
- Google Search Central — Core Web Vitals — current thresholds and search guidance
- Deloitte and Google — Milliseconds Make Millions — sector-specific mobile study
- Axion — State of Small Business Websites 2026 — 191 valid mobile lab tests from a non-random sample
Last verified July 13, 2026
07Work with Campbell Digital Studio
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