24/08/2026
On a typical product page, 70 to 90% of visitors never scroll past the first screen (also called the ‘first viewport’ or ‘above the fold’).
Check any of your heatmaps and you’ll see attention drop right off a cliff below the first fold.
So for most of your traffic, the first viewport is the entire PDP.
It’s about 20% of the page, and it drives something like 80% of the outcome.
That’s the Pareto Principle in action for e-commerce CRO.
Instead of spending your time on the content that only 20% of your visitors will see,
put 80% of your time into the first screen.
That’s where almost everyone actually decides.