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Understanding Viewport Tracking: An Alternative to Scroll Tracking for Website Analytics

As website owners and managers, understanding how users interact with our webpages is essential to improving user engagement and driving conversions. Traditionally, scroll tracking has been a popular method of monitoring user behavior, but a newer alternative is gaining popularity: viewport tracking.

What is viewport tracking?

Viewport tracking is a method of tracking user behavior on a website by monitoring which parts of a webpage are visible on a user’s screen. This technique divides a webpage into different sections or “viewports” and tracks how often each viewport is visible to the user.

Scroll tracking monitors how far users scroll down a page, whereas viewport tracking provides a more accurate picture of user engagement by only registering the visible parts of the page. This information can be used to optimize a webpage’s content and design to improve user engagement and drive conversions.

What are the benefits of using viewport tracking?

Accurate tracking: Viewport tracking provides a more accurate picture of how users engage with a webpage by only registering the parts of the page that are visible on the user’s screen. This method eliminates the potential for inaccurate data that can be caused by factors such as quick scrolling or screen size variations.

Dynamic tracking: Viewport tracking enables the tracking of multiple viewports on pages of varying lengths, providing more accurate insights than scroll tracking. Unlike scroll tracking, which monitors a fixed percentage of each page regardless of its length, viewport tracking adjusts to the unique structure of each page to ensure precision in measuring user engagement.

User-centric approach: Viewport tracking focuses on the user’s experience and engagement with the webpage, providing valuable insights that can be used to make user-centric improvements. By improving the user experience, website owners can increase customer satisfaction and loyalty.

How can it be implemented?

Viewport tracking can be implemented using a variety of tools and services, including Google Tag Manager. Google Tag Manager offers the option to add Java Script Code to your Tags to be able to track viewports.


It’s important to note that viewport tracking should be used in conjunction with other analytics tools to get a comprehensive view of user behavior on your website. For example, scroll tracking can still be useful in certain scenarios, such as when you want to track how far users scroll down a specific page or section.

Contact us to get more information and we can help you set up viewport tracking!

Read more about Google Tag Manager at Advance Metrics

Do you have questions about how to set up viewport tracking?