What your visitors experience. Move the sliders, hit Reload page, then click around the demo page below to feel each Core Web Vitals score for yourself.
LCP Largest Contentful PaintGood2.0 s
0.5sGood ≤2.5s · Poor >4s8s
INP Interaction to Next PaintGood100 ms
0msGood ≤200ms · Poor >500ms1s
CLS Cumulative Layout ShiftGood0.05
0Good ≤0.1 · Poor >0.250.5
Tip: set CLS to 0.3, reload, and try to tap "Add to cart" while the page loads. That ad didn't reserve its space, sound familiar? See how to fix CLS caused by ads.
https://totally-real-store.example
TotallyRealStoreShopDealsAbout
🎯 LATE-LOADING AD, did the page just jump?
🏔️← this is the LCP element
The Ultra-Comfy Hiking Boot
Waterproof, feather-light, and rated 4.9★ by 12,000 hikers. Free shipping on all orders. Try the buttons below, how responsive do they feel?
💸 ANOTHER LATE AD, more layout shift!
Directionally, yes. LCP delays your main content, INP makes every click feel laggy (it really blocks this page's main thread), and CLS injects ads with no reserved space, the top cause of layout shift in the wild.
Google's thresholds are measured at the 75th percentile of real users: LCP ≤ 2.5s, INP ≤ 200ms, CLS ≤ 0.1. If any slider is red, that share of your audience is having a bad day.