{
  "slug": "core-web-vitals-report",
  "name": "Core Web Vitals report",
  "aliases": [
    "Page speed report",
    "CWV report",
    "Site performance report",
    "Lighthouse report"
  ],
  "audience": "Engineering",
  "job": "Identify which vital is failing, on which templates, and whether it moved enough to warrant engineering time.",
  "cadence": "Monthly",
  "summary": "The performance index at site and template level: the three Core Web Vitals with their pass rates, the supporting Lighthouse scores, and the trend across measurement runs. It exists to replace the forwarded single-page screenshot with a distribution, one slow page is not a site problem, and a failing vital on a high-traffic template is. Measurement cadence varies by property, which the report states rather than smooths over.",
  "headline": [
    "cumulative-layout-shift",
    "interaction-to-next-paint",
    "cwv-grade-distribution",
    "cwv-overall-verdict"
  ],
  "diagnostic": [
    "performance-score",
    "cwv-vital-grade",
    "cwv-weakest-vital",
    "clicks"
  ],
  "guardrail": [
    "largest-contentful-paint",
    "lighthouse-category-scores",
    "crawler-response-time"
  ],
  "sources": [
    "lighthouse",
    "site-crawl",
    "search-console",
    "server-logs"
  ],
  "skills": [
    "cwv-regression-watch",
    "technical-health-audit"
  ],
  "rungs": [
    "R1"
  ],
  "questions": [
    "Are our Core Web Vitals passing?",
    "Which vital is failing and on which pages?",
    "Did page speed regress after the release?",
    "Which templates are slowest?"
  ],
  "workflows": [],
  "caveats": "Vitals collection is typically biweekly and the interval differs by property, some priority URLs are measured nightly and the rest much less often, so a 'change' can be two measurements weeks apart. These are lab-style measurements on a sampled URL set, not field data from your users. The vitals are lower-is-better while the Lighthouse scores are higher-is-better, and the non-vital Lighthouse scores are on a scale that is still under review; present those as directional only.",
  "verification": "verified",
  "lastVerified": "2026-08-04"
}