2.5 seconds or less for most real visits. Google treats that as good LCP at the 75th percentile, on mobile and desktop separately. A demo store score does not count.
web.dev says a good Largest Contentful Paint is 2.5 seconds or less, measured at the 75th percentile of page loads. Poor is above 4 seconds.
Install the theme with your own catalog and apps. Check home, collection, and product pages on a mid-range phone. Rank the theme on the slowest of the three, not the best.
Source: web.dev, Largest Contentful Paint (LCP). Reviewed Sep 23, 2026.