How to fix cwv lcp on Wix

Steps for Wix

1. IDENTIFY LCP IMAGE: Run PageSpeed Insights on your Wix site URL. The LCP is usually the large image/strip at the top of your homepage.
2. WEBP: Wix automatically serves images in WebP to supporting browsers — no conversion needed. Ensure your source image is high quality JPEG/PNG uploaded through the Wix Media Manager.
3. OPTIMISE IMAGE SIZE: In the Wix Editor, click the hero image/strip › Settings › change the image to the smallest dimensions that still look sharp (e.g., 1500px wide for a full-width banner). Oversized source images slow delivery even after auto-conversion.
4. PRELOAD (LIMITED): Wix does not allow direct <head> tag editing on standard plans. Upgrade to Wix Studio or use Wix's Velo (Dev Mode) to inject a preload link via the wix-seo API: import wixSeo from 'wix-seo'; wixSeo.setLinks([{rel: 'preload', href: 'YOUR_IMAGE_URL', as: 'image'}]);
5. DEFER JS: Wix controls most JS loading internally. Minimise third-party apps (Wix App Market) that inject scripts — every unused app adds render-blocking weight. Remove apps you do not actively use.
6. LAZY-LOAD: Wix applies lazy-loading automatically; for the hero image, position it as a 'strip background' or 'above-the-fold' element so Wix's engine prioritises it. Wix Studio users can set fetchpriority via custom properties.
7. VERIFY: Re-run PageSpeed Insights after publishing changes.

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 banner — to fully appear in a visitor's browser. Google considers a "good" LCP anything under 2.5 seconds. An LCP of 9+ seconds means shoppers are staring at a blank or partially loaded page for nearly ten seconds before they see your main content. LCP is one of Google's three Core Web Vitals, which are direct ranking signals used in Google Search.

A slow LCP directly hurts your Google rankings because Core Web Vitals are an official page-experience ranking factor — pages with poor LCP can lose positions to faster competitors even with identical content. More critically, research consistently shows that every additional second of load time reduces conversion rates by 2–7%; an LCP of 9 seconds can cost you the majority of mobile visitors who leave before the page even finishes loading. Mobile shoppers are disproportionately affected because mobile connections are slower, and Google indexes the mobile version of your site first. Fixing LCP is one of the highest-ROI technical improvements an ecommerce store can make: faster pages rank higher, bounce less, and convert better.

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