Real Core Web Vitals, not a lab guess.
Google ranks on field data from actual visitors, not a single Lighthouse run. Pulse checks both and tells you plainly whether a page passes the bar that actually matters.
2.5s
LCP threshold Google calls "good." Past 4s is "poor," and that's a ranking signal, not a suggestion.
200ms
INP threshold for responsiveness. Replaced FID in March 2024, most tools still quote the old metric.
0.1
CLS threshold for layout stability, measured on real page loads across a 28-day window.
Basic $5/mo
For anyone running checks constantly: CI pipelines, agent workflows, a dashboard polling every few minutes. Raises /api/check and check_vitals to 150 requests a minute. No monitoring, just headroom.
Pro $19/mo
Everything in Basic, plus monitoring: track up to 10 URLs, rechecked daily, with an email the moment a page's verdict flips from passing to failing. 500 requests a minute.
Or take the membership: Pro on this and four other products for $15 a month.