Active View is a technology on YouTube and certain Display Network websites and mobile apps that allows Google Ads to determine if your ad is viewable by potential customers.

• A display ad is considered viewable when at least 50% of its area is visible for at least 1 second. A video ad is considered viewable when at least 50% of its area is visible while the video is playing for at least 2 seconds. 
  • Note: For large display ads of 242,500 pixels or more, the ad is counted as viewable when at least 30% of it’s area is visible for at least 1 second.
• Active View-enabled websites allow you to use a viewable CPM bid for display campaigns, to set a different bid amount for impressions on sites where the ad appears in a viewable position.
• You might see this term in certain column names for your video and Display Network reports, such as "Measurable cost," "Measurable impr.," or "Viewable rate."
• Active View metrics are compliant with the industry standards for the viewability of online ads.
• Keep in mind: Active View can tell you when ads are viewable, but it can’t guarantee that a user is looking at the screen at that time.

Related links

Understanding viewability and Active View reporting metrics

Bid on viewable impressions using viewable CPM

* Nguồn: Google