Selecting multiple images for your ads in a single ad set is an easy way to understand which ad performs best and to get the most out of the amount that you spend on advertising. When you provide us with multiple images, we create multiple ads for you under one ad set, so we can use your ad set budget towards the ad that's performing better than the others.

Bear in mind that you'll only be charged once for the budget that you decide on if you create multiple ads under one ad set, because your budget is assigned at the ad set level.

For information on recommended image sizes and more, take a look at the Facebook Ads guide.

* Nguồn: Facebook