This guide is built for store owners whose Search Console reports show failing Core Web Vitals scores. It’s ideal for developers fixing LCP, INP, or CLS issues on a Magento 2 storefront. If you’re an agency reporting Magento SEO performance to a client, this covers every metric in one place. Most Magento stores fail LCP from oversized catalog images and fail CLS from dynamically loaded price or swatch data. I’ve fixed Magento 2 Core Web Vitals issues on more than 50 stores over the past 6 years.