How to fix cwv lcp on Wix

Steps for Wix

1. In the Wix Editor, click your hero/banner image → Change Image → upload a WebP version of the file (Wix's media manager stores it and its CDN serves it). Wix also auto-generates WebP on its CDN for most uploaded images.
2. Ensure the hero strip/image is set to 'No lazy loading': click the hero element → Settings (gear icon) → under 'Layout' or 'Design', confirm 'Lazy load' is NOT enabled for above-the-fold images. Wix automatically treats the first visible image as LCP-priority in modern sites.
3. Minimize installed Wix Apps and third-party widgets: each one adds JS. Go to Settings → Manage Apps and remove any apps not actively driving revenue.
4. Use Wix's built-in 'Site Speed Dashboard' (available in Business/eCommerce plans under Analytics & Reports → Site Speed) to identify additional render-blocking resources specific to your site.
5. For Wix Studio users: in the Pages & Layout panel, ensure the hero image block does not have an animation or 'reveal on scroll' effect applied, as these add JS overhead and can delay LCP paint.
6. Re-test with PageSpeed Insights after changes; Wix's infrastructure handles most CDN and format optimization automatically, so the biggest wins come from reducing apps and avoiding lazy-load on the hero.

<link rel="preload" as="image" href="/images/hero-banner.webp" fetchpriority="high" imagesrcset="/images/hero-banner-800.webp 800w, /images/hero-banner-1500.webp 1500w" imagesizes="100vw">

<!-- Hero img tag — NO lazy loading, explicit dimensions -->
<img src="/images/hero-banner.webp"
     srcset="/images/hero-banner-800.webp 800w, /images/hero-banner-1500.webp 1500w"
     sizes="100vw"
     width="1500" height="600"
     alt="Descriptive hero text"
     fetchpriority="high"
     loading="eager">

What is cwv lcp?

Largest Contentful Paint (LCP) measures how long it takes for the biggest visible element on your page — almost always the hero image or headline banner — to fully appear on the screen after someone clicks your link. Google considers anything under 2.5 seconds "Good," 2.5–4 seconds "Needs Improvement," and over 4 seconds "Poor." An LCP of 7.5 seconds on mobile means shoppers are staring at a blank or half-loaded page for over seven seconds before they see your store's main content — a painfully long wait that drives them away before they ever see your products.

LCP is one of Google's Core Web Vitals, a confirmed ranking signal that directly affects where your store appears in search results. A poor LCP score suppresses organic traffic, meaning fewer potential buyers even find your store. On mobile — where most ecommerce browsing now happens — slow LCP dramatically increases bounce rates: studies consistently show conversions drop 4–8% for every additional second of load time. Improving LCP from 7.5s to under 2.5s can meaningfully lift both your search rankings and the percentage of visitors who stay long enough to make a purchase. Mobile-first indexing means Google judges your site primarily by its mobile experience, so a slow mobile LCP hurts your desktop rankings too.

See the complete Cwv lcp guide for every platform and the full background.