How to Track Scroll Depth with GTM
Enable the Scroll Depth built-in variable in GTM (Variables > Configure > Scroll Depth Threshold). Create a Scroll Depth trigger: choose Vertical Scroll Depths, select Percentages, and enter thresholds (25, 50, 75, 100). Create a GA4 Event tag with event name 'scroll_depth' and parameters including
Quick Summary
Enable the Scroll Depth built-in variable in GTM (Variables > Configure > Scroll Depth Threshold). Create a Scroll Depth trigger: choose Vertical Scroll Depths, select Percentages, and enter thresholds (25, 50, 75, 100). Create a GA4 Event tag with event name 'scroll_depth' and parameters including scroll_percentage (from the Scroll Depth Threshold variable) and page_path. This data shows which pages engage users and where they lose interest — useful for content optimisation and landing page analysis.
Overview
Enable the Scroll Depth built-in variable in GTM (Variables > Configure > Scroll Depth Threshold). Create a Scroll Depth trigger: choose Vertical Scroll Depths, select Percentages, and enter thresholds (25, 50, 75, 100). Create a GA4 Event tag with event name 'scroll_depth' and parameters including scroll_percentage (from the Scroll Depth Threshold variable) and page_path. This data shows which pages engage users and where they lose interest — useful for content optimisation and landing page analysis.
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