Ad Viewability
Ad Viewability measures whether an ad was actually seen by a user. According to the Media Rating Council (MRC) standards, a display ad is considered viewable when at least 50 percent of its pixels are visible on screen for one continuous second. For video ads, the threshold is typically two seconds.
High viewability indicates strong ad placement and better potential for user engagement. For advertisers, paying for non-viewable impressions wastes budget, while publishers benefit from proving that their inventory meets industry visibility standards.
Improving viewability can be achieved through optimized placements, lazy loading, and careful format selection. It’s one of the most important metrics in programmatic advertising, directly influencing CPM rates and advertiser trust.
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