Below-the-fold refers to the portion of a webpage (or app screen) that a user cannot see until they scroll. In Paid Marketing, and especially in Display Advertising, the concept matters because ad placements below-the-fold often generate very different results than placements visible immediately on page load. They can be cheaper and less intrusive—but also less viewable, less attention-grabbing, and harder to measure correctly if you’re not intentional.

Modern Paid Marketing strategies don’t treat Below-the-fold as “bad inventory” by default. Instead, they evaluate it based on viewability, user intent, content context, creative fit, and outcomes like incremental conversions. As page designs, mobile browsing behaviors, and programmatic buying evolve, knowing how Below-the-fold works helps you make smarter bidding, placement, and measurement decisions in Display Advertising.

What Is Below-the-fold?

Below-the-fold is the area of a page that sits beneath the initially visible screen. The “fold” is not a fixed line—it depends on device type, screen size, browser window, font sizes, and layout. On mobile, the fold may occur after a few lines of content; on desktop, it might be much farther down.

The core concept is simple: if an ad is placed Below-the-fold, it won’t be seen unless the user scrolls to it. That has major business implications:

• Exposure is conditional: the ad impression might be served, but the user may never actually view it.
• Engagement patterns differ: users who scroll often show higher intent, but the audience size shrinks.
• Performance can be misunderstood: traditional impression-based reporting can over-credit or under-credit Below-the-fold placements.

In Paid Marketing, Below-the-fold is a placement consideration across programmatic and publisher-direct buying. In Display Advertising specifically, it influences viewability, CPM efficiency, brand lift, and conversion attribution—often more than the creative itself.

Why Below-the-fold Matters in Paid Marketing

Below-the-fold matters because placement is part of the product you’re buying. Two ads with the same targeting and creative can perform differently if one is above the fold and the other is Below-the-fold.

Key reasons it affects Paid Marketing outcomes:

• Media efficiency and pricing: Below-the-fold inventory often has lower CPMs because it is perceived as less valuable. That can be an opportunity if you can still achieve strong viewability and downstream results.
• Viewability and attention: Display Advertising increasingly uses viewable impressions and attention proxies. Below-the-fold placements are more likely to miss viewability thresholds if users don’t scroll far enough or long enough.
• Audience quality: Users who scroll may be more engaged with the content. That can translate into higher conversion rates for certain offers, especially retargeting or lower-funnel campaigns.
• Creative fatigue and user experience: Below-the-fold ads can be less disruptive, which may reduce negative brand perception and improve long-term performance.
• Competitive advantage: Teams that measure placement quality (not just clicks) can exploit Below-the-fold inventory that competitors ignore—or avoid low-quality placements that silently waste budget.

In short, Below-the-fold is not just a UI concept; it’s a lever that changes the economics and effectiveness of Display Advertising within Paid Marketing.

How Below-the-fold Works

Below-the-fold is more conceptual than procedural, but it does “work” through a practical chain of events that influences delivery, measurement, and outcomes.

1. Trigger: page load and ad request
   When a page loads, ad slots are defined in the page layout. Some slots are above the fold; others are Below-the-fold. Depending on how the site is built, Below-the-fold slots may request ads immediately or only when the user scrolls near them.

2. Processing: auction, eligibility, and rendering rules
   In programmatic Display Advertising, the ad request enters an auction. Your bid, targeting, brand safety filters, creative size, and frequency rules determine whether you win. If you do, the creative renders either immediately or when the slot loads.

3. Execution: viewability and user behavior
   Whether the ad becomes viewable depends on scrolling, time on page, layout shifts, sticky elements, and device performance. A Below-the-fold ad can be “served” but never enter the viewport.

4. Outcome: measurement and optimization signals
   Platforms record impressions, viewable impressions, clicks, post-view conversions, and other signals. Your optimization decisions—bids, exclusions, placements, creative—depend on whether these signals reflect real exposure. Poor instrumentation can make Below-the-fold look better or worse than it truly is.

This is why Below-the-fold is tightly connected to viewability measurement and to how publishers implement lazy loading and ad refresh behaviors.

Key Components of Below-the-fold

Understanding Below-the-fold in Paid Marketing involves more than identifying where the fold sits. The main components that shape performance include:

Placement and layout context

• Page templates (article pages, category pages, product pages)
• Ad slot location relative to content sections
• Sticky headers/footers that reduce visible area
• Infinite scroll vs. paginated pages

Delivery mechanics

• Lazy loading (ads load only when near the viewport)
• Ad refresh (slots may refresh after time/scroll events)
• Header bidding and auction dynamics
• Mobile app webviews vs. browsers

Measurement and governance

• Viewability measurement and standards (e.g., time-in-view)
• Brand safety and content adjacency controls
• Frequency capping and user-level exposure management
• Team responsibilities: media buyer, analytics lead, web/dev, and publisher partner

Data inputs and signals

• Scroll depth and engaged time
• Session quality signals (bounce rate, time on page)
• Conversion paths and attribution settings
• Placement IDs, ad unit names, and URL patterns

Below-the-fold performance becomes reliable only when these components are consistently tracked and acted upon.

Types of Below-the-fold

Below-the-fold isn’t a single “type,” but in Display Advertising there are meaningful distinctions that change how you buy and optimize.

1) Immediately served vs. lazy-loaded Below-the-fold

• Immediately served: the ad is requested on page load even if the slot is off-screen. This can inflate impression counts without guaranteeing viewability.
• Lazy-loaded: the ad request occurs when the user scrolls near the slot. This often improves viewability rates and reduces wasted impressions, but can lower scale.

2) Standard Below-the-fold vs. deep Below-the-fold

• Near-fold placements: just below the initial viewport; more likely to be seen.
• Deep placements: far down long pages; typically lower viewability but potentially higher intent among users who reach them.

3) In-content vs. end-of-content placements

• In-content (between paragraphs): can align with reading flow and perform well for certain creatives.
• End-of-content: may capture fewer users but sometimes yields high-quality attention among those who finish the piece.

These distinctions matter in Paid Marketing planning because they affect both scale and quality.

Real-World Examples of Below-the-fold

Example 1: Prospecting with viewability guardrails

A brand runs Display Advertising prospecting to build awareness. They allow Below-the-fold placements but enforce viewability thresholds and exclude low-quality templates (e.g., pages with excessive ads). Result: CPMs drop while viewable reach remains stable. The brand gets more efficient awareness without paying premium rates for every above-the-fold impression.

Example 2: Retargeting on long-form content

An ecommerce team retargets visitors with dynamic creative. They find that Below-the-fold placements within long-form buying guides outperform above-the-fold banners on news sites. The reasoning: users who scroll deep into a guide are closer to purchase intent. In Paid Marketing reporting, they optimize toward viewable impressions plus post-view conversions, not clicks alone.

Example 3: Mobile app inventory with scroll-driven exposure

A subscription app buys in-app Display Advertising. On mobile, “the fold” is tight and users scroll quickly. The team tests Below-the-fold placements that lazy-load and uses shorter message creatives. They improve viewability and reduce accidental clicks that previously distorted performance metrics, leading to cleaner conversion measurement.

Benefits of Using Below-the-fold

When managed intentionally, Below-the-fold can create real advantages in Paid Marketing:

• Lower media costs: below-the-fold inventory often clears at lower CPMs, enabling broader reach or more frequency within the same budget.
• Incremental reach: you can extend coverage beyond premium above-the-fold slots, especially on high-traffic publishers.
• Better alignment with engaged users: users who scroll are often more invested in the content, which can improve downstream conversion rates for certain offers.
• Less intrusive experience: placements that don’t interrupt the initial content view can feel less aggressive, supporting brand sentiment.
• Optimization flexibility: in Display Advertising, Below-the-fold can be used strategically for sequential messaging (e.g., awareness above the fold, reinforcement below).

Challenges of Below-the-fold

Below-the-fold also introduces risks and complexities that teams must manage:

• Low or inconsistent viewability: if users don’t scroll, the ad may never be seen—especially on short sessions or high bounce pages.
• Measurement ambiguity: impression counts can mislead. Without viewability and engagement metrics, reporting may overstate delivered value.
• Lazy load and refresh pitfalls: poorly configured lazy loading can delay rendering too long, while aggressive refresh can create non-human-looking impression patterns.
• Attribution noise: post-view conversions can be over-attributed to placements that were served but not actually seen, depending on how attribution is configured.
• Creative fit issues: some creatives rely on immediate visibility; Below-the-fold can reduce impact if the user is already “past” the message stage.
• Quality and brand safety variability: deep placements on low-quality pages can harm performance and brand perception.

For Display Advertising teams, the goal is not to eliminate Below-the-fold, but to separate high-quality from low-quality inventory.

Best Practices for Below-the-fold

Use these practices to make Below-the-fold placements work reliably in Paid Marketing:

Optimize for viewability and real exposure

• Prefer buying models or optimizations that account for viewable impressions, not just served impressions.
• Use placement-level reporting (site, app, ad unit, and position) to identify which Below-the-fold slots deliver actual in-view time.

Implement scroll- and engagement-aware measurement

• Track scroll depth and engaged time to understand the likelihood that users reach Below-the-fold areas.
• Segment results by device type; the fold behaves differently on mobile vs. desktop.

Control inventory quality

• Use allowlists/denylists and template exclusions where possible.
• Evaluate page ad density and layout stability; shifting layouts can harm viewability and user experience.

Match creative to placement

• Use clear branding and message hierarchy that still works if the user sees the ad mid-scroll.
• Test sizes and formats that fit natural reading breaks for in-content Below-the-fold placements.

Treat Below-the-fold as a testable lever

• Run controlled experiments: compare above-the-fold vs. Below-the-fold within the same site/template.
• Measure incrementality where possible, especially for upper-funnel Display Advertising.

Tools Used for Below-the-fold

Below-the-fold performance is driven by how well you measure and act on exposure and placement quality. Common tool categories include:

• Analytics tools: to analyze scroll depth, time on page, engaged sessions, and conversion paths. Useful for connecting on-site behavior to ad outcomes.
• Ad platforms and DSPs: to manage bids, targeting, frequency caps, and placement reporting for Display Advertising. Look for controls that let you evaluate viewability and inventory quality.
• Ad verification and viewability measurement: to validate whether Below-the-fold impressions were viewable and to monitor fraud/invalid traffic signals.
• Tag management and event tracking systems: to implement consistent tracking of scroll events, viewport exposure, and page template metadata.
• Reporting dashboards: to unify metrics across platforms and break out performance by placement position, device, and publisher.
• CRM and lifecycle systems: to connect Paid Marketing exposure to downstream customer value, not just immediate conversions.

The key is integration: Below-the-fold insights are most actionable when ad delivery data and on-site engagement data are analyzed together.

Metrics Related to Below-the-fold

To evaluate Below-the-fold in Paid Marketing and Display Advertising, focus on metrics that reflect real visibility and business impact:

• Viewability rate: percentage of impressions that met viewability criteria. Essential for comparing below-the-fold and above-the-fold inventory.
• Measurable impressions: not all impressions can be measured for viewability; this helps interpret viewability rate correctly.
• Time-in-view / attention proxies: how long the ad was in the viewport. Often more predictive than clicks for awareness campaigns.
• Scroll depth distribution: what percentage of users reach 25%, 50%, 75%, or 90% of the page—helps estimate opportunity for Below-the-fold exposure.
• CTR (with caution): Below-the-fold CTR can be lower (less visibility) or sometimes higher (more engaged scrollers). Interpret alongside viewability to avoid false conclusions.
• Post-view and post-click conversions: useful, but must be paired with viewability to avoid over-crediting unseen impressions.
• CPM, vCPM, and CPA: compare cost efficiency across placement positions; vCPM (viewable CPM) is often a clearer comparison than CPM alone.
• Invalid traffic and brand safety rates: quality indicators that can vary by deep placements and long-tail inventory.

Future Trends of Below-the-fold

Below-the-fold is evolving as Paid Marketing becomes more exposure- and privacy-aware:

• AI-driven placement optimization: machine learning will increasingly optimize not just by site, but by page template signals, predicted scroll depth, and attention likelihood.
• More lazy loading by default: publishers continue adopting lazy loading to improve page performance, which can reduce wasted Below-the-fold impressions and change auction timing.
• Attention measurement maturation: Display Advertising is moving beyond “was it viewable?” toward “was it noticed?” Expect more emphasis on time-in-view, screen share, and contextual engagement.
• Privacy changes and measurement constraints: as user-level tracking becomes harder, aggregate and modeled measurement will grow. That makes clean viewability and placement data even more valuable.
• Personalized page experiences: dynamic layouts can shift where the fold occurs per user, making consistent placement labeling and measurement critical.

Teams that treat Below-the-fold as a measurable exposure problem—not a simple placement label—will outperform in modern Paid Marketing.

Below-the-fold vs Related Terms

Below-the-fold vs Above-the-fold

• Above-the-fold is visible immediately on load; Below-the-fold requires scrolling.
• Above-the-fold often commands higher prices in Display Advertising due to higher expected viewability.
• Below-the-fold can be more efficient when viewability is managed and user intent is high.

Below-the-fold vs Viewability

• Below-the-fold describes location on the page.
• Viewability describes whether an ad was actually in the viewport for a minimum threshold.
  A Below-the-fold ad can be highly viewable if users scroll; an above-the-fold ad can still fail viewability if it loads slowly or is quickly scrolled past.

Below-the-fold vs Impression

• An impression typically means the ad was served.
• Below-the-fold impressions can be served without being seen, depending on how the page loads ads. This is why viewable impressions and time-in-view are important in Paid Marketing evaluation.

Who Should Learn Below-the-fold

Below-the-fold is worth learning because it sits at the intersection of media buying, measurement, and user experience:

• Marketers: to plan smarter budgets, choose placements intentionally, and avoid misleading performance conclusions.
• Analysts: to build reporting that separates served impressions from true exposure and ties Display Advertising to business outcomes.
• Agencies: to justify media decisions, manage publisher conversations, and deliver better efficiency for clients.
• Business owners and founders: to understand why cheaper inventory can sometimes perform better—and when it’s a trap.
• Developers and web teams: to implement lazy loading, tracking, and layout stability in ways that support accurate Paid Marketing measurement.

Summary of Below-the-fold

Below-the-fold is the part of a page users can’t see without scrolling. In Paid Marketing, it’s a crucial concept because placement position changes viewability, attention, cost, and how performance should be measured. In Display Advertising, Below-the-fold inventory can deliver efficient reach and strong results—especially when paired with viewability controls, scroll-depth insights, and placement-level optimization. The best approach is not to avoid Below-the-fold, but to measure it properly and use it deliberately.

Frequently Asked Questions (FAQ)

1) What does Below-the-fold mean in advertising?

Below-the-fold means the ad is placed in a part of the page that isn’t visible when the page first loads. The user must scroll for the ad to enter the viewport, which can reduce or concentrate exposure depending on user behavior.

2) Is Below-the-fold always worse than above-the-fold?

No. Below-the-fold often has lower viewability, but it can be more cost-efficient and may reach more engaged users who scroll. The “better” option depends on your goal (awareness vs. conversion), creative, device mix, and measurement quality.

3) How do I measure whether Below-the-fold ads were actually seen?

Use viewability metrics (viewable impressions, viewability rate) and, when possible, time-in-view. Pair that with scroll depth and engaged time to understand the likelihood that users reached those placements.

4) What should I optimize for in Display Advertising when using Below-the-fold placements?

In Display Advertising, prioritize viewable CPM or cost per viewable impression, then evaluate downstream metrics like post-view conversions and incremental lift. Avoid optimizing solely for CTR, which can misrepresent real effectiveness.

5) Does lazy loading improve Below-the-fold performance?

Often yes, because it can reduce served-but-unseen impressions by only loading ads when the user scrolls near them. However, if configured poorly, it can delay rendering too long and reduce viewable opportunities.

6) How can Below-the-fold affect Paid Marketing attribution?

If attribution credits conversions to served impressions regardless of viewability, Below-the-fold can be over-credited. Align attribution windows and conversion reporting with viewability and exposure signals to reduce this risk.

7) When should I exclude Below-the-fold inventory?

Consider excluding it when you’re buying for maximum immediate visibility (some brand launches), when viewability is consistently low on certain templates, or when measurement indicates high invalid traffic or poor brand safety outcomes from deep placements.