Above the Fold
The portion of a web page visible without scrolling, typically the most valuable ad real estate.
What is Above the Fold?
Above the fold (ATF) refers to the portion of a web page that is visible in the browser window when the page first loads, without the user needing to scroll. The term originates from print newspapers, where the most important headlines were placed above the physical fold of the paper to attract buyers at newsstands.
In digital advertising, the fold line varies depending on the user's device, screen resolution, and browser window size. On desktop, the fold is typically around 600-800 pixels from the top of the page. On mobile, it can be as low as 500-600 pixels, though this varies widely across devices.
Why It Matters for Publishers
Above-the-fold ad placements consistently achieve the highest viewability rates and, consequently, command the highest CPMs. Advertisers know that users are most likely to see content and ads in this area, making ATF inventory significantly more valuable than below-the-fold (BTF) placements.
However, Google and other ad networks have policies about excessive ad placement above the fold. Google's Page Layout Algorithm (Top Heavy Update) can penalize sites that fill the above-the-fold area primarily with ads rather than content. The key is balance — include ad units in the ATF area but ensure that users can still see meaningful content without scrolling.
Tips for Optimization
- Place one high-impact ad unit ATF: A single well-placed leaderboard (728x90) or large rectangle (336x280) above the fold is more effective than multiple small units competing for attention.
- Don't push content below the fold: Google specifically penalizes sites where ads dominate the above-the-fold area. Ensure your main content heading and at least the first paragraph are visible without scrolling.
- Use responsive design: The fold position changes across devices. Ensure your ATF ad placements work well on both desktop and mobile viewports.
- Test ATF layout variations: A/B test different ATF ad sizes and positions to find the combination that maximizes revenue without increasing bounce rate.
- Consider sticky ATF alternatives: Instead of multiple ATF ads, a single sticky ad that stays visible as users scroll can provide continuous ATF-equivalent visibility.