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How can I track scroll depth in Google Analytics 4 using GTM?

Asked on Nov 10, 2025

Answer

To track scroll depth in Google Analytics 4 using Google Tag Manager (GTM), you need to set up a Scroll Depth trigger and a corresponding GA4 event tag. This allows you to measure how far users scroll down your web pages.

<!-- BEGIN COPY / PASTE -->
    1. Open Google Tag Manager and create a new Trigger.
    2. Choose "Scroll Depth" as the trigger type.
    3. Set the trigger to fire at specific percentages (e.g., 25%, 50%, 75%, 100%).
    4. Create a new GA4 Event Tag.
    5. Set the Event Name to "scroll_depth" and configure parameters like "percent_scrolled".
    6. Assign the Scroll Depth trigger to this tag.
    <!-- END COPY / PASTE -->

Additional Comment:

Ensure your GA4 configuration tag is set up correctly to send data to your GA4 property.
Test the trigger and tag in GTM's Preview mode to verify they are firing correctly.
Check the Events report in GA4 (Reports → Engagement → Events) to see scroll depth data.
Consider customizing the event parameters to capture additional context, such as page URL or title.

✅ Answered with Analytics best practices.

Ask any question about Analytics & Tracking here... and get an instant response.

How can I track scroll depth in Google Analytics 4 using GTM?

Asked on Nov 10, 2025

Answer

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