JavaScript libraries; RUM
Who left web-vitals, and who still runs it
5,614 websites in the top 1M run web-vitals, observed directly from the rendered page in the July 2026 crawl.
922
stopped running it that month
71
of those are 11–500 employees
3,472
adopted it in the last year
Confirmed across two consecutive crawls, not a single month. Build the list →
Some companies running web-vitals
Every row in a full list carries the prospect's whole detected stack.
Not currently available as a list.
What else they run
Google Tag Manager 88%Google Analytics 87%Open Graph 78%Cloudflare 72%core-js 69%HSTS 63%jQuery 62%Priority Hints 52%Unpkg 52%Cloudflare Bot Management 49%
Share of a 3,000-domain sample of web-vitals users that also run each.