Reduce Layout Shift from Review Sections

Cumulative Layout Shift (CLS) is one of Google's Core Web Vitals, and review sections are a common offender. When a review widget loads asynchronously and pushes page content down, every element below it shifts — the add-to-cart button jumps, the description moves, and the shopper who was about to click something suddenly misclicks. This is both a UX problem and an SEO problem.

The fix is to reserve space for your review section before it loads. Set a minimum height on the review container based on the typical rendered height of your review section. This prevents layout shift because the space is already allocated when the review content eventually loads.

For dynamic content where the review section height varies significantly by product (some have 3 reviews, some have 300), use a reasonable minimum height and allow the container to grow if needed. A small upward CLS from the container shrinking is less disruptive than a large downward CLS from content insertion.

Eevy AI eliminates review-caused CLS through server-side rendering — review sections are included in the initial HTML response with their full content, so there is no client-side layout shift. The sections render at their final size from the first paint.