Optimizing Core Web Vitals

Accelerate Your Static Site Performance

Search engines prioritize websites that load instantly and offer visual interactions. For static HTML sites, achieving Core Web Vitals (LCP, FID, CLS) is highly achievable. This article covers the essential optimizations.

1. Largest Contentful Paint (LCP)

Improve LCP by compressing high-resolution images. Convert PNG/JPG files to next-gen formats like WebP or AVIF. Host site assets on global Content Delivery Networks (CDNs) like Vercel Edge or Cloudflare to deliver files from servers closest to users.

2. Cumulative Layout Shift (CLS)

Prevent page shifting by declaring explicit dimensions on all images. Use font-display: swap in CSS to load fallback system fonts instantly while web fonts load.

3. Inline Critical CSS

Extract and inline the CSS required to render the top portion of your page directly inside your block, and defer loading the rest of your stylesheets.