SEOAug 28, 2026 6 min read
The Core Web Vitals Checklist We Run on Every Launch
The exact checks that get our sites to green LCP, INP and CLS scores before launch, and why it matters for rankings and conversions.
Why it matters
Google uses Core Web Vitals as a ranking signal, and every 100ms of delay costs conversions. Fast sites simply make more money.
The checklist
- Optimised, correctly sized images in modern formats
- Fonts self-hosted with swap behaviour
- No layout shift from ads, embeds or late-loading content
- Minimal third-party scripts, loaded after interaction
- Edge caching and a global CDN
Tools we use
Lighthouse, PageSpeed Insights, WebPageTest and real-user monitoring from the Chrome UX report.
#seo#performance