Author
One Payload Admin

Core Web Vitals: A Founder’s Guide to Site Speed

Author
One Payload Admin

LCP, INP, and CLS sound technical — but they directly affect SEO, ads quality scores, and conversions. Here is the practical version.

The Three Metrics That Matter

• LCP (Largest Contentful Paint): how fast the main content appears

• INP (Interaction to Next Paint): how responsive the page feels when users click

• CLS (Cumulative Layout Shift): how much the layout jumps while loading

Common Causes of Poor Scores

Huge unoptimised images, render-blocking scripts, heavy page builders, and layout shifts from late-loading ads or fonts.

Many “beautiful” sites fail vitals because decoration was prioritised over delivery.

What We Fix First

1. Image and font strategy

2. Critical rendering path and third-party scripts

3. Server/edge caching and modern frameworks

4. Template-level layout stability

Then we re-measure on real devices — not just lab scores.

Core Web Vitals: A Founder’s Guide to Site Speed | One Payload