Scroll down to trigger milestones at 25%, 50%, 75%, 90%, and 100%. Watch the event log panel.
You're at the top. Start scrolling down to trigger scroll_depth events.
The pixel should fire a scroll_depth event at 25%. This indicates basic engagement with the page content.
scroll_depth at 50%. The visitor has now seen half the page content. This is a good indicator of interest.
scroll_depth at 75%. The visitor is highly engaged and consuming most of the content on this page.
scroll_depth at 90%. This is the last milestone before page_completion. Very high engagement signal.
page_completion event should fire. The visitor has scrolled through the entire page. Maximum engagement!