Video Ad Viewability: 50% Wasted Spend in 2026

Only 50.9% of video ads served across the open web are actually viewable, according to a recent report from Integral Ad Science (IAS). This stark figure means that nearly half of all video ad spend is effectively wasted on impressions that never register with a human eye. It’s a sobering truth for marketers who pour significant resources into video campaigns, highlighting a persistent challenge: ensuring video ad viewability remains a top priority for effective digital advertising.

The Startling Reality: Half of Your Video Budget Vanishes

The IAS report’s headline statistic, that less than 51% of video ads are viewable, isn’t just a number; it’s a direct assault on marketing budgets. This isn’t theoretical leakage. This is real money, invested in creative, media buying, and distribution, disappearing into the digital ether. Imagine buying 100 TV spots and knowing only 50 of them ever aired. That’s the digital equivalent here, and it’s unacceptable. Marketers must confront this inefficiency head-on. The problem isn’t just about wasted impressions; it’s about the lost opportunity to connect with potential customers. If your ad isn’t seen, it cannot persuade, inform, or convert.

Mobile Dominance: Where Eyes Actually Land (Sometimes)

Delving deeper into the data, a critical distinction emerges: mobile video ad viewability significantly outperforms desktop. Statista reports that global mobile video ad viewability reached 68.4% in the first half of 2025, while desktop lingered at 57.1%. This isn’t surprising. Mobile users are often more engaged with their devices, and video content on smaller screens tends to command more attention, especially in full-screen formats. Publishers on mobile also have more control over the user experience, often integrating video players more effectively into the content flow. For advertisers, this means a mobile-first video strategy isn’t just a trend; it’s a fundamental requirement for maximizing viewability. If your campaign isn’t optimized for mobile consumption, you’re leaving significant viewable impressions on the table. It also suggests that the desktop experience, often cluttered with multiple ads and distractions, is inherently more challenging for viewability. We need to acknowledge this reality and adjust our media plans accordingly. Simply porting a desktop video ad to mobile without optimization is a recipe for poor performance.

The Silent Saboteur: Ad Fraud’s Impact on Impression Quality

While low viewability can stem from poor page design or user behavior, a more insidious factor is at play: ad fraud. Fraudsters don’t care if an ad is seen; they care if it’s counted. Sophisticated botnets and impression hijacking schemes are designed to simulate viewable impressions, driving up costs for advertisers without any real human exposure. A recent eMarketer projection estimated that ad fraud will cost advertisers billions globally in 2025. This isn’t just about financial loss. It corrupts the data we rely on to make strategic decisions. If your viewability metrics are artificially inflated by bots, you’re making decisions based on faulty intelligence. Combatting ad fraud requires robust verification partners and a constant vigilance against new tactics. Connected TV (CTV) platforms, with their higher CPMs, are increasingly becoming targets for sophisticated fraud operations, making proactive detection technologies more vital than ever.

The MRC Standard: A Baseline, Not a Guarantee

The industry standard for video ad viewability, set by the Media Rating Council (MRC), dictates that a video ad is considered viewable if 50% of its pixels are in view for at least two consecutive seconds. While this provides a much-needed common ground, it’s a low bar. Two seconds is barely enough time for a user to register what they’re seeing, let alone process a message or brand. I often argue that while the MRC standard is essential for measurement consistency, it should be treated as the absolute minimum. Advertisers aiming for real impact should strive for significantly higher thresholds, perhaps 75% of pixels in view for the entire duration of the ad, or at least for 50% of the ad’s total length. Relying solely on the MRC standard can create a false sense of security, leading marketers to believe their ads are being effectively consumed when, in reality, they’re barely glimpsed. We must push beyond mere compliance to genuine engagement.

Beyond the Numbers: My Take on the “Conventional Wisdom”

Conventional wisdom often dictates that advertisers should simply “buy more premium inventory” to solve viewability issues. While premium placements can certainly help, it’s an oversimplification and often an expensive one. The reality is that even premium publishers can have poor ad placements or aggressive auto-play settings that undermine viewability. I believe the true solution lies not just in where you buy, but how you buy and what you demand from your partners. Insisting on transparent reporting, employing multiple third-party verification tools, and setting custom viewability thresholds that exceed the MRC standard are far more effective than simply chasing “premium.” Furthermore, understanding the nuances of how different ad formats and placements perform is critical. An in-stream ad on a highly engaged content piece will almost always outperform an out-stream ad buried below the fold, regardless of the publisher’s “premium” status. Don’t just trust the label; trust the data from your verification partners.

The focus on impression quality is not a luxury; it’s a necessity. Advertisers who fail to prioritize video ad viewability are essentially throwing money away. By understanding the data, leveraging mobile-first strategies, combating ad fraud, and pushing beyond minimal industry standards, marketers can ensure their video campaigns truly resonate with their target audiences, delivering genuine value for every dollar spent.