By Robert Jakobson · Updated 7 November 2026 · 7 min read · Next review May 2027
Half of all websites still fail Google's speed checks on mobile, almost every home page has accessibility errors, and visitors judge a site in a fraction of a second. Meanwhile AI search is small but growing fast.
Quote anything here. A link back is appreciated. Every figure carries its source and date.
Mobile
Each dot is 1% of web traffic. The bright dots are phones.
Speed and Core Web Vitals
Share of mobile websites rated good on each of Google's three page experience metrics. Loading is the weakest.
HTTP Archive Web Almanac 2025, July 2025 data2. Desktop overall pass rate was 56%.
First impressions
In a 2006 study, people rated the visual appeal of web pages shown for a twentieth of a second, and those ratings closely matched what they said after looking longer.
Accessibility
Share of home pages with each error. WebAIM Million 20263.
Clicks on a regular search result
Share of visits to a Google results page that ended in a click. 900 US adults, March 2025. Pew Research Center6.
Fewer people click through, so the ones who do need a page that answers fast. And the AI tools need facts they can quote. Take the Two Readers Test.
What to do with these numbers
Speed
Check PageSpeed Insights field data on mobile. Fix loading first.
Contrast
Fix contrast and alt text. Most accessibility errors, one afternoon.
Headline
One sentence at the top that says what you do and for whom.
Schema
Organization, service and FAQ markup so AI describes you right.
Measure
Track visits from chatgpt.com and perplexity.ai as their own channel.
Questions people ask
What share of web traffic is mobile?
59.9% worldwide in October 20261.
How many sites pass Core Web Vitals?
48% on mobile and 56% on desktop, July 20252.
How many websites are accessible?
Very few. 95.9% of top home pages have detectable failures3.
How much traffic comes from AI search?
About 0.32% in 2026, after growing 16 times since 20247.
