If you are receiving a blank PDF when trying to render content, but the content of the link is not blank, it may be that the link was not performant. In order to avoid such issues, we recommend using a performant service, such as Amazon S3, to host the content. In order for this content to be visible, ensure that the link is set to public viewing, and not private, as this is one of the common reasons why content may appear as missing or blank in your creative.