Official thresholds
LCP good ≤ 2.5s, INP good ≤ 200ms, CLS good ≤ 0.1. We grade each and tell you which need work — no guessing.
Free tool · 100% in your browser
Core Web Vitals Pass/Fail Checker
Enter your LCP, INP, and CLS field values and we grade each against Google's official thresholds — instantly, with what "good" means.
What this tool checks
Use field data
Real-user field data (PageSpeed Insights, Search Console) is what Google uses — more meaningful than a one-off lab test.
This tool sees your page from the outside
The free Aetos plugin sees inside your WordPress.
This tool checks what a bot sees from a public URL. The free Aetos edition runs a real audit from inside WordPress — across your pages and WordPress environment — so it catches signals an outside view cannot see.
Free edition, no card. Pro adds additional analysis modules, exports, and the AI fix assistant. Want us to do it for you? Talk to the team → Talk to the team
FAQ
Common questions
Where do I get my LCP/INP/CLS numbers? +
PageSpeed Insights (the field-data section) or the Core Web Vitals report in Google Search Console. Enter those values here.
Do Core Web Vitals affect ranking? +
They're a real but modest ranking factor (page experience). More importantly, slow pages lose conversions regardless of ranking.