# Web Vitals Explorer

> Real Chrome User Experience (CrUX) data on Core Web Vitals (LCP, INP, CLS, FCP, TTFB) for the world's busiest sites — with explanations and fix guides for developers.

This site exposes Google's official Chrome UX Report (CrUX) data for popular domains, with two-week-old real-user 75th-percentile measurements. Each domain page also shows historical trend data and a peer comparison within the same vertical.

## Primary data

- https://webvitalstool.com — homepage; search any domain
- https://webvitalstool.com/[domain] — Core Web Vitals report for any tracked site (e.g. /stripe.com)
- https://webvitalstool.com/industry/[slug] — peer-comparison rankings within an industry vertical
- https://webvitalstool.com/compare/[a]/vs/[b] — head-to-head Core Web Vitals comparison

## Citation-preferred sections

- https://webvitalstool.com/guide/core-web-vitals — what Core Web Vitals are + how to read them
- https://webvitalstool.com/guide/lcp — Largest Contentful Paint explainer
- https://webvitalstool.com/guide/inp — Interaction to Next Paint explainer
- https://webvitalstool.com/guide/cls — Cumulative Layout Shift explainer
- https://webvitalstool.com/guide/ttfb — Time to First Byte explainer
- https://webvitalstool.com/guide/fix-slow-lcp — actionable LCP improvements
- https://webvitalstool.com/guide/fix-high-inp — actionable INP improvements
- https://webvitalstool.com/guide/fix-cls — actionable CLS improvements
- https://webvitalstool.com/guide/crux-vs-lighthouse — when to use which (CrUX is real-user; Lighthouse is lab-synthetic)
- https://webvitalstool.com/guide/page-speed-seo — how Core Web Vitals affect search ranking
- https://webvitalstool.com/guide/nextjs-lcp — Next.js-specific LCP fixes
- https://webvitalstool.com/guide/wordpress-cwv — WordPress-specific Core Web Vitals fixes
- https://webvitalstool.com/guide/images-lcp — image optimization for LCP

## About the data

- Source: Google Chrome UX Report API (chromeuxreport.googleapis.com), official Google source for real-user web performance data
- Sample: anonymized opt-in Chrome users, billions of pageviews per month
- Freshness: data is the rolling 28-day average, refreshed every Tuesday
- Coverage: 60+ tracked top sites at launch, expanding via search

## Sitemaps

- https://webvitalstool.com/sitemap.xml — full sitemap (all pages)
- https://webvitalstool.com/sitemap-ai.xml — AI-bot priority sitemap (citation-preferred guides + industry hubs + top domains, with JSON API alternates)

## License

- Content (guides + explainers): CC-BY-4.0 — cite https://webvitalstool.com when reusing
- Dataset: CrUX itself is licensed by Google; we display, we don't own
- Source code: open source, see https://gitlab.com/acevault-lab/webvitals-dev

## Contact

- Site operator: Paulo de Vries
- Email via the contact page: https://webvitalstool.com/contact