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Banner Improvements

July 3, 2025

Viewability Metrics in Banner Ad Campaigns

Why it’s important: These new metrics provide a much deeper and more accurate understanding of how users are interacting with banner ads. Previously, it was difficult to know if an ad that was served was actually seen by the user. With viewability data, we can now differentiate between an ad being simply delivered and an ad being genuinely viewed. This is a critical distinction for accurately measuring ad effectiveness and ROI.

Key Benefits:

  • Accurate Performance Measurement: Understand the true reach and impact of your campaigns by focusing on viewable impressions, not just total impressions. Adjust your campaign configuration to achieve the best results.
  • Improved Optimization: Identify high-performing and underperforming ad placements. If an ad has high impressions but low viewability, it may be placed in a location that users rarely scroll to.

How to use it:

  • In your campaign reports for banner ads, you will now see four new tiles: “Win Percentage,” “Auctions Won,” “Viewable Impressions,” and “Viewability.”
  • Monitor these metrics alongside your other campaign data (like clicks and CPM) to get a complete picture of performance.
  • Use the data to find any issues with your targeting options or adjust your bidding strategy.
Banner viewability metrics

Reserve Prices for Banner Ad Slots

Why it’s important: This feature gives retailers more control over the value of their ad inventory. In an auction-based environment, setting a floor price is crucial to prevent inventory from being sold for less than its perceived value. This is especially important for premium ad slots that are in high demand.

Key Benefits:

  • Protect Inventory Value: Prevent your premium ad slots from being undersold in low-bid auctions.
  • Increase Ad Spend and Revenue: By setting a minimum price, you encourage autobidding campaigns to bid higher, which can lead to increased overall ad spend and revenue.
  • Maximize Yield: Strategically set reserve prices based on demand, seasonality, or slot performance to maximize the yield from your ad inventory.

How to use it:

  • Share with Topsort a file with slot ids and reserve prices.
  • Enter the minimum CPM and CPC you are willing to accept for that slot.
  • Our autobidding system will not place a bid below this price for that specific slot.
#CSV file with
external_slot_id,cpm_reserve_price,cpc_reserve_price
slot-top-landing,10,15