Above the Fold

Above the fold refers to whatever content a visitor sees immediately upon loading a page, before scrolling — the term originates from newspapers, where the top half of the front page (visible when folded) carried the most important headlines. On the web, it varies by device and screen size, but it's generally treated as the single most valuable piece of real estate on a page for grabbing attention and communicating a core value proposition.

CRO teams pay close attention to what's placed above the fold because it heavily influences bounce rate, time on page, and whether visitors even discover a call to action further down. Testing changes here — headline copy, hero images, primary CTA buttons — tends to produce some of the largest and most measurable effects in on-page experimentation, simply because near-universal exposure means large sample sizes are seen quickly.

A classic test example: moving a signup button from below a long block of explanatory text to directly above the fold, paired with a shorter headline, often lifts conversion meaningfully — not because the offer changed, but because far more visitors actually saw the call to action before deciding to leave.