Ad formats and layout guides
What you put on the page, and where, decides a large part of what you earn. These guides cover the formats buyers pay for, the sizes that get the most demand and how to place ads so the page stays fast and readable.
Start here, then go deeper
- Banner Ad Sizes Publishers Should Use in 2027
- Interstitial Ads CPM and How to Test Them Safely
- Display Ads Sizes for Each Ad Slot (2027 Guide)
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Banner Ad Sizes Publishers Should Use in 2027
The standard banner ad sizes Google and the IAB list, which ones get the most demand, which to drop, and how to set multi-size slots without layout shift.
Read the guide · 13 min →
Interstitial Ads CPM and How to Test Them Safely
Why interstitial ads CPM runs higher than banners, what sourced data shows, Google's interstitial ad rules for web and AdMob, and how to test without losing RPM.
Read the guide · 11 min →
Display Ads Sizes for Each Ad Slot (2027 Guide)
Display ads sizes to enable in each ad slot, with the Ad Manager and AdSense steps, size mapping code and the space to reserve so your pages don't jump.
Read the guide · 14 min →