Generate and Preview Creative Variants
Generate all of the ad variants that you created in Template & Experiment Mode by clicking the Generate button on the top bar.
If any of the ads did not come out as you'd like, go back to the canvas to make adjustments or go to your Asset Library to edit the focal points of your assets.
Preview Creative Variants in Different Size
To preview creatives in different size, click the canvas size button on the top of the page to open the placement selector. Select another size to preview the creatives in the that size.
Click on the Download Creatives button on the top of the page. When the button becomes Download Ready, click the button again to download the creatives as a zip file.
Creatives will downloaded as png files