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 Ad Refresh Techniques
1. Time-Based Refresh
This refreshes ads after a set number of seconds, typically between 30 and 90. Simple, but not always efficient—especially if users scroll past the ad before the refresh triggers.
2. Viewability-Based Refresh
More advanced—ads only refresh after being in view for a defined duration. This ensures that each impression has a chance to be seen, which improves CPM and advertiser trust.
3. Event-Based Refresh
Triggered by user actions like scrolling, tab switching, or expanding widgets. These are context-aware and can lead to better engagement when used thoughtfully.
Example: Optimizing Ad Refresh on a Recipe Website
A food blog implemented time-based refreshes every 45 seconds across its sidebar units. After switching to viewability-based logic and refreshing only when ads were 70% visible for 30 seconds, their viewability improved by 28% and CPMs rose by 19%.
They also limited the total number of refreshes per session to prevent over-saturation.
Best Practices for Smart Ad Refresh
- Use viewability triggers over static timers
- Set a max refresh cap per session (e.g., 3–5 refreshes per unit)
- Only refresh when user is active or engaging with content
- Don’t refresh below-the-fold units if they’re out of view
- Test and monitor each change’s impact on CPM and viewability
These strategies keep users from being overwhelmed while giving advertisers better-performing impressions.
How Ad Refresh Affects CPM and Revenue
Properly implemented refresh increases total impression volume, which directly raises total revenue. However, CPMs per refreshed impression might be slightly lower. The goal is to find the right balance where total revenue increases without degrading per-impression value.
Also, by ensuring impressions are viewable, publishers can still command strong CPMs even for refreshed ads.
Tools and Tech for Managing Refresh
Popular ad tech platforms like Google Ad Manager, Prebid.js, and Amazon TAM support custom refresh logic. You can define triggers using JavaScript or integrate with analytics to refine behavior based on scroll depth, viewability data, or dwell time.
Third-party services also offer refresh optimization solutions that automate much of the tuning process using machine learning.
Final Thoughts: Quality Over Quantity
Refreshing ads isn’t about cramming more impressions into a session. It’s about creating more value per visit, for both the user and the advertiser. When planned with user experience in mind, ad refresh can become a powerful tool for increasing revenue sustainably—no tricks, no spammy tactics, just smart publishing.
Comments
Post a Comment