Glossary

Ad Viewability

Product Nomenclature
Ad viewability measures whether an advertisement is actually seen by users, providing advertisers with insights into how effectively their ads are displayed. It ensures that advertisers pay only for ads that have the potential to engage their audience. What You Should Know The Media Rating Council (MRC) and the Interactive Advertising Bureau (IAB) define ad viewability standards as:
  • Display Ads: At least 50% of the ad must be visible for one continuous second.
  • Video Ads: At least 50% of the video player must be visible for at least two continuous seconds.
  • Rich Media Ads: Interactive ads must be viewable for the time specified by the platform.
Platforms like Google Ads, DoubleVerify, and Moat provide ad viewability tracking and reporting. How It Works Ad viewability is measured using tracking pixels or viewability tags that monitor when and how long an ad appears within a user’s screen. Viewability metrics are reported as a percentage, representing how many impressions were actually seen by users. For example, if a fashion retailer’s ad is served 1,000 times but only 600 impressions meet the visibility criteria, the viewability rate is 60%. Advertisers often use programmatic platforms to bid specifically on inventory with high viewability scores. Advantages
  • Reduces Wasted Spend: Ensures advertisers pay only for visible impressions.
  • Improves Ad Effectiveness: Measures actual exposure, not just delivery.
  • Optimizes Campaign Performance: Identifies placements with high visibility rates.
  • Supports Better Ad Design: Encourages placements in high-traffic and above-the-fold areas.
Applications and Use Cases A luxury watch brand tracks ad viewability to ensure that its banner ads on premium lifestyle websites are fully seen. A mobile game developer adjusts placements to improve viewability rates by prioritizing rewarded video ads over interstitials. An electronics retailer uses viewability data to negotiate better placements with publishers.