Benchmark 08 · Brand & web

Site speed & Core Web Vitals revenue benchmark

Is your website fast enough to convert, and what is each second costing? We measure your real-user Core Web Vitals and page speed, benchmark them against the HTTP Archive 2025 web, and translate the gap into conversions using Deloitte's speed research.

Get your free snapshot Industry report · $199

The market reference

What the market looks like.

48%Share of mobile websites passing all Core Web Vitals in 2025 (56% on desktop)¹

+8.4%Retail conversions after a 0.1-second mobile speed improvement (Deloitte)²

+9.2%Retail average order value after the same 0.1-second improvement²

KPI	Market reference	Best-in-class / note	Source
Core Web Vitals pass rate — mobile	48% of origins (2025)	32% in 2021	¹
Core Web Vitals pass rate — desktop	56% of origins (2025)	41% in 2021	¹
Retail conversions per 0.1 s faster	+8.4%	—	²
Travel conversions per 0.1 s faster	+10.1%	—	²
Lead-gen bounce rate per 0.1 s faster	8.3% better	—	²

Speed is both a ranking signal and a conversion lever. Half the mobile web still fails Core Web Vitals¹, which makes a fast site a competitive advantage, especially on mobile, where most traffic now lands.

Who it’s for

Is this benchmark for you?

Industries

Retail & e-commerce · Hospitality · Professional services · SaaS & tech

Buyer

Sales & marketing · CIO, CTO & IT

Company profile

Any company whose website sells or generates leads
Good first benchmark if you are new to AI

You need it if…

Pages feel slow on mobile
Search rankings or ad quality scores are slipping
Mobile converts far below desktop

The benchmark

What we measure. What you get.

What we measure

Real-user LCP, INP and CLS on key templates
Mobile vs desktop gap
Heaviest scripts, images and third-party tags
Speed on revenue pages: home, product, checkout, forms
Conversion rate by speed band from your analytics

What you receive

Your Core Web Vitals vs the 2025 web
Revenue at stake per 0.1 s, modelled on your traffic
Prioritised fix list by effort and impact
Monitoring set-up so speed stays fixed

Typical turnaround: 1–2 weeksService: Brand & webFree snapshot: available

Industry report · $199 · in production

The full site speed & core web vitals study.

Planned contents. Everything behind this page, in depth: the numbers by sector and company size, what top performers do differently, and a model to price your own gap.

Market size and growth, every analyst estimate reconciled
KPI quartiles by company size, sector and region
Original survey data from decision-makers
Cost-of-the-gap model with worked examples
How top-quartile companies close the gap
Solution landscape and a 12-month roadmap
Self-assessment scorecard

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How it works

Four steps. No disruption.

Intake call

30 minutes with a senior engineer to agree scope, KPIs and the data we need.

Data, read-only

Exports or read-only access to the systems involved. Nothing is changed.

Analysis

Your numbers placed against the published market references, KPI by KPI.

Readout

Your position, the cost gap in dollars and a costed roadmap to close it.

Reports & custom benchmarks

Reserve this report.

Reserve the site speed & core web vitals industry report, or ask for a custom benchmark on your own data.

Your Core Web Vitals vs the 2025 web
Revenue at stake per 0.1 s, modelled on your traffic
Prioritised fix list by effort and impact

Sources

1
HTTP Archive, Web Almanac 2025 — Performance chapter. almanac.httparchive.org/en/2025/performance
2
Deloitte, Milliseconds Make Millions (37 brand sites, 30M sessions). deloitte.com/ie/en/services/consulting/research/milliseconds-make-millions.html