{
  "slug": "lighthouse-pagespeed-insights",
  "name": "Lighthouse / PageSpeed Insights",
  "url": "https://pagespeed.web.dev",
  "cat": "seo",
  "group": "ship",
  "tagline": "Core Web Vitals and speed audit",
  "price": "Free. Web UI is unlimited; the PageSpeed Insights API allows 25,000 requests/day at no cost. Lighthouse is open source under Apache 2.0 and runs in Chrome DevTools, the CLI or CI.",
  "tier": "free",
  "pick": false,
  "what": "PageSpeed Insights runs Google's open-source Lighthouse audit against a URL and scores performance, accessibility, best practices and SEO alongside lab Core Web Vitals. It also surfaces real-user CrUX field data — LCP, INP and CLS from actual Chrome visitors — when a URL has enough traffic.",
  "why": "Core Web Vitals are both a ranking input and a real bounce factor on image-heavy article pages. Lighthouse CI can fail a build when a page regresses, so performance stops rotting silently.",
  "warn": "Lab scores swing between runs and reward synthetic conditions — trust the CrUX field data over the headline score. A new site has no field data at all for months.",
  "install": "npx lighthouse https://example.com --view",
  "category": {
    "key": "seo",
    "name": "SEO, growth & newsletter",
    "desc": "Getting found, and owning the audience once you are.",
    "group": "ship",
    "groupName": "Ship it & keep it alive"
  },
  "freshness": null,
  "health": {
    "ok": true,
    "status_code": 200,
    "final_url": "https://pagespeed.web.dev/",
    "checked_at": "2026-08-18T20:13:57.562+00:00"
  },
  "corrected_at": null,
  "upstream_changed_at": null
}