Analytics
Who left Vercel Speed Insights, and who still runs it
1,399 websites in the top 1M run Vercel Speed Insights, observed directly from the rendered page in the July 2026 crawl.
475
stopped running it that month
17
of those are 11–500 employees
1,551
adopted it in the last year
Confirmed across two consecutive crawls, not a single month. Build the list →
Some companies running Vercel Speed Insights
Every row in a full list carries the prospect's whole detected stack.
Not currently available as a list.
What else they run
Vercel 100%HSTS 100%React 94%Node.js 94%Webpack 91%Next.js 91%Open Graph 86%Priority Hints 80%Google Analytics 73%Tailwind CSS 71%
Share of a 1,399-domain sample of Vercel Speed Insights users that also run each.