A measure of how far down a page a visitor scrolls, typically tracked as a percentage of total page length or at defined checkpoints (25%, 50%, 75%, 100%).
Why it matters
Scroll depth reveals whether visitors are actually reaching key content and calls to action placed further down a page — a CTA with a low click rate might simply be a placement problem if scroll-depth data shows most visitors never scroll far enough to see it in the first place.
In a sentence
"Scroll depth data showed only 20% of visitors reached the pricing table at the bottom of the page, which was reason enough to move it higher."
Related terms
- Often confused with: Time on page (scroll depth measures how far a visitor physically scrolls; time on page measures how long they stay, regardless of how much of the page they actually viewed — a visitor could spend a long time on a page without scrolling far, or scroll to the bottom quickly).