Once you’ve finished setting up your campaign, you can use the Ad Previewer to see how your ads will look to viewers, as well as testing how your chosen campaign target will work. The Ad Previewer page can be shared with coworkers, clients or anyone to whom you want to show your ads.
You will need to have added your credit card and turned the campaign on in order to view and use the Ad Previewer page.
Click the “Preview” button found in your campaign’s footer.
If you have used multiple themes within your campaign, you will see all the selected themes in the left panel of the Ad Previewer. Click on the different themes to preview ads created with the selected theme.
Remember, if you are using multiple themes, make sure the scheduled dates are correct. You can change the theme schedule or add/remove themes from your campaign’s Creative page.
You can also preview ads by ad format or device on the Ad Previewer page. The default device setting is “All ad pages”, which shows all ad sizes created in the campaign.