Scroll Depth

Understanding Scroll Depth

Scroll depth tracking reveals how much of your page content visitors actually see. A scroll depth of 50% on a product page means the average visitor sees only the top half. Any content below that point — reviews, cross-sells, FAQs — reaches a significantly smaller audience.

For e-commerce product pages, scroll depth data typically shows a steep drop-off after the hero section. The product image, title, price, and add-to-cart button receive the most views. Each subsequent section receives progressively fewer views. This is why placing review summaries and star ratings above the fold is so impactful — it ensures social proof reaches the maximum number of visitors.

Mobile scroll depth patterns differ from desktop. Mobile users tend to scroll further in percentage terms (because screens are smaller and pages are longer) but spend less time per section. This means mobile review sections need to be more compact and scannable to be effective within the brief attention each scroll position receives.

Track scroll depth as a quartile metric: what percentage of visitors reach 25%, 50%, 75%, and 100% of your page. If a critical conversion element like your review section sits at the 75% mark and only 20% of visitors reach it, you have a placement problem that no amount of review optimization will fix.