Performance Engineering Tool
Core Web Vitals Threshold & Budget Calculator
Simulate and benchmark your real user experience against Google's official 75th percentile (p75) thresholds for search ranking signals.
Core Web Vitals Assessment: PASSING
All three primary metrics (LCP, INP, CLS) satisfy Google 75th percentile requirements.
Google CWV Benchmark
Largest Contentful Paint (LCP)Loading Performance
Measures render time of the largest image or text block. Target: ≤ 2.5s.
2.10s
GoodInteraction to Next Paint (INP)Interaction Responsiveness
Measures longest latency of user clicks, taps, and key presses. Target: ≤ 200ms.
140ms
GoodCumulative Layout Shift (CLS)Visual Stability
Measures unexpected layout movement during page lifecycle. Target: ≤ 0.10.
0.04
GoodTTFB (Server Latency)Good
450ms
FCP (First Paint)Good
1.20s
Automatic RUM Telemetry with Open Analytics
Instead of running synthetic lab audits, Open Analytics captures real user p75 percentiles from actual visitors across desktop, mobile, and slow cellular networks automatically.