What Is Ad Refresh? Ad refresh is the practice of reloading an ad slot with a new ad impression after a set period or trigger, without requiring the user to reload the page. This allows publishers to generate more impressions from the same placement while the user remains active on the page. There are different types of refresh triggers—time-based, event-based (scrolling or clicks), or viewability-based (when an ad remains in view for a certain time). Done right, it can increase total revenue. Done poorly, it can damage user experience and CPMs. Why Ad Refresh Needs Optimization Not all refreshes are created equal. Over-refreshing can lead to ad blindness, low viewability, and reduced engagement. Some SSPs and demand sources penalize excessive refreshing, especially if users don’t actually see the new impressions. To keep CPM high and users happy, optimization is key. That means using smart triggers, respecting visibility, and balancing monetization with usability. Types of...
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