Above the fold refers to the portion of a web page visible without scrolling. It carries disproportionate weight because many visitors decide whether to continue within seconds. What appears there should make clear who the page is for, what is offered, and what to do next.

Most visitors decide whether to keep reading before they scroll, which makes the top of your page the highest-stakes space you own. It should answer who this is for, what you do, and why it matters, in seconds. Founders routinely fill it with a vague headline and an image, then wonder why qualified traffic bounces.

Example:

A specific headline naming the buyer and the outcome holds attention. A vague claim about transforming your business loses visitors before they scroll.

What should appear above the fold?

A clear statement of who the page is for, what is offered, and the next action, so a visitor can decide quickly whether it is relevant.

Does above the fold still matter on mobile?

Yes, and arguably more, since the visible area is smaller and visitors decide quickly whether a page is worth continued attention.