Overview

Shows the percentage of real user experiences rated Good, Needs Improvement, or Poor for each Core Web Vitals metric. Green bars represent Good scores — aim for 75% or higher on each metric. If a metric is underperforming, focus on the specific resource or interaction causing the slowdown: large images and render-blocking scripts are common culprits for LCP, while layout shifts often stem from unsized media or late-loading fonts.

Shows how users arrive at your pages, which directly affects perceived load speed. Standard Navigate is the slowest path (a full page load), while Nav (cache), BF Cache, and Prerender represent progressively faster experiences served from HTTP cache, in-memory cache, or pre-loaded in the background respectively. Reload and Back/Forward fall in between. To shift users toward faster navigation types, set appropriate cache headers, audit for bfcache-blocking issues like unload listeners or Cache-Control: no-store, and use the Speculation Rules API to prerender likely next pages.