Full Answer
Analytics platforms report aggregate numbers — a 68% checkout abandonment rate, a 2.1% add-to-cart rate — but they can't tell you what a visitor actually did on the page before leaving. Heatmaps and session recordings fill that gap by mapping click density, scroll depth, and attention zones across hundreds of sessions. The patterns they surface are often counterintuitive: visitors hovering over shipping cost text instead of the checkout button, or rage-clicking a non-functional element they assumed was a link.
For WooCommerce stores specifically, the default checkout layout creates blind spots that analytics alone won't catch. Form fields that look fine on desktop can stack awkwardly on mobile, pushing the place-order button below the fold where scroll-depth data shows most users never reach. Tools like Microsoft Clarity (free) or Hotjar layer this behavioural data on top of your analytics, turning a conversion rate number into a prioritised list of fixes.
The catch: heatmap tools run client-side JavaScript, which means ad blockers and privacy browsers suppress them the same way they suppress analytics tags. A store tracking checkout events server-side and overlaying heatmap data client-side gets both perspectives — the reliable conversion count and the behavioural context that explains it ([WooCommerce tracking setup](https://seresa.io/blog/woocommerce-tracking/)).