The percentage of an ad that is actually seen by a user, often used as a measure of ad effectiveness.

View Full Glossary
Advertising Glossary

What Is Viewability?

Viewability is a crucial metric in digital advertising that measures the proportion of an ad that is visible to a user when it appears on a website or platform. It serves as an indicator of ad effectiveness, reflecting the extent to which an ad captures the user's attention and has the potential to deliver its intended message.

Viewability is often expressed as a percentage, representing the portion of the ad that is viewable within the user's browser window without the need for scrolling. Ad viewability takes into consideration factors like ad placement, size, and the user's interaction with the page.

This metric is significant because an ad that is not viewable, regardless of its creative quality, cannot fulfill its intended purpose of communicating with the audience. Advertisers aim for high viewability rates to ensure that their content has the best chance of being noticed and absorbed by users.

Viewability is intertwined with ad placement and design, and it plays a role in optimizing advertising budgets and strategies. By monitoring and improving viewability, advertisers can maximize the impact of their campaigns, increase user engagement, and enhance the overall return on investment (ROI) of their advertising efforts.