Above the Fold

The part of a web page visible before a visitor scrolls. Its boundary changes with screen size, browser controls, zoom, and responsive layout, so it is not a fixed pixel height. The initial viewport should make the page's purpose and main content easy to identify without crowding the area or hiding content behind an intrusive overlay.

Why it matters: Visitors should be able to recognize what the page offers and find a sensible next step without guessing. That does not mean every message, CTA, or proof point must appear before the first scroll. Review real mobile and desktop layouts, make it obvious that more content follows, and use analytics or usability testing to evaluate the page rather than relying on a universal fold rule.