Ad formats
Every format Koah can serve, rendered live for you to interact with.
Koah automatically chooses the optimal ad format for each placement, based on the ad slot you define. Below is a preview of some of the formats Koah can serve. To customize elements like accent color, typography, corner radius, and interface chrome, refer to Theming.
Action Card
A concise message with a clear call to action. Great for driving direct click-throughs to an advertiser's destination.
Image Card
Pairs ad copy with a product banner image. Good for capturing attention when visual assets are available.
Poll
An interactive question users can vote on. Useful for boosting engagement, gathering user sentiment, and measuring brand lift.
Expandable
Starts compact and reveals longer-form content on click. Ideal for deeper storytelling without crowding the initial layout.
Currently served on Android and iOS (and the web SDK); availability is platform-specific — check your SDK's changelog.
Catalog
A horizontally-scrolling carousel of products or offers. Ideal when an advertiser has several items to show — users swipe through them inline.
Currently served by the JavaScript (web) SDK.
Sizing & dimensions
You don't choose a format. Instead, Koah picks the best-fitting one for the slot. You only tell Koah how much room the slot has, by bounding it with a maximum width and/or height. Koah then serves only formats that fit.
Use the slider to visualize which ad formats remain available as you adjust the slot size.
koah.requestAd({ dimensions: { maxHeight: 550 } })For exact per-variant bounds in your platform's units, see your SDK's Reference page.
Prefer leaving at least one axis unbounded. The wider the pool of eligible formats, the higher your fill rate and revenue.