{
  "guide": "enable-enhanced-measurement-scrolls",
  "checked": "2026-11-11",
  "event": "scroll",
  "trigger": "first time a user reaches the bottom of a page",
  "depth_threshold_percent": 90,
  "worked_example": {
    "page_height_px": 4000,
    "trigger_depth_px": 3600,
    "recomputed": "0.90 x 4000 = 3600"
  },
  "fires_per_page": 1,
  "dimension": "Percent scrolled",
  "parameters": [
    "engagement_time_msec"
  ],
  "report_location": "Reports > Engagement > Events > scroll",
  "note": "no 25, 50, or 75 percent events in the built-in option"
}