Complete Guide to Core Web Vitals Optimization

Browser viewport diagram showing an eager loaded hero lcp image above the fold and lazy loaded images below the fold, beside a rule of thumb panel for safe lazy loading.

Lazy Loading

Lazy loading is a technique that defers loading of non-critical resources, usually images and iframes, until…
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Diagram of lazy loading showing above the fold images loaded eagerly and below the fold images deferred with loading equals lazy while protecting the lcp element.

Lazy Loading

Lazy loading means not loading images and other content until someone scrolls down to them. It…
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Preload

Preload

Preload is a resource hint that tells the browser to fetch a specific file early and…
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Above the fold

Above the Fold

Above the Fold is the portion of a web page visible in the browser viewport before…
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Diagram of the three core web vitals, lcp, inp, and cls, with their good thresholds and the first fix to try for each.

Complete Guide to Core Web Vitals Optimization

Comprehensive guide to Core Web Vitals covering implementation, best practices, troubleshooting, and advanced techniques.
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