Performance

Mastering Core Web Vitals for Technical SEO

Google's ranking algorithm prioritizes speed and stability. Here is how to engineer it.

READ TIME 11 min read
VM

VISHAL MEHTA

Creative Director, VELOCITY

calendar_today Mar 12, 2024
schedule 11 min read
Mastering Core Web Vitals for Technical SEO

Understanding the Metrics

Core Web Vitals (CWV) are a set of specific factors that Google considers important in a webpage's overall user experience. The big three are Largest Contentful Paint (LCP), Cumulative Layout Shift (CLS), and Interaction to Next Paint (INP).

LCP measures loading performance. CLS measures visual stability. INP measures interactivity. Failing these metrics directly harms your organic search rankings.

Optimizing for Perfection

To achieve an LCP under 2.5 seconds, critical CSS must be inlined, and hero images must be preloaded using the `fetchpriority='high'` attribute. We heavily utilize AVIF image formats and edge caching to ensure assets are delivered instantly.

CLS is often caused by dynamically injected content or images without explicit dimensions. By reserving space for dynamic ad slots and utilizing aspect-ratio CSS properties, we completely eliminate layout shifts.

"Performance is a feature. In 2024, a slow website is indistinguishable from a broken website."

— Vishal Mehta
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