Core Concepts Wiki Entry

Lazy Loading

Deferring image and resource loading until needed in the viewport.

Lazy loading reduces initial page weight, accelerates first paint and improves Core Web Vitals. The native loading="lazy" attribute on images and iframes is now widely supported. Avoid lazy-loading hero images and above-the-fold content, which delays LCP. Wix applies lazy loading automatically while preserving above-the-fold image priority.

Related Entries

Core Web Vitals

Google's page experience metrics measuring loading, interactivity and stability.

Largest Contentful Paint (LCP)

A Core Web Vital measuring how long the largest visible element takes to render.

Image SEO

The practice of optimising images for search visibility and page performance.

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