You can change the size of a slide in your PowerPoint presentation through the "Design" menu on the Windows PC, Apple MacOS, ...
The average PowerPoint deck can get crazy insane big -- megabytes of images, video, and other rich media can make your presentation too large to e-mail, and even bog down a slugging network connection ...
Files may be uploaded using the Digital Signage Submission Form. Media formats: JPG, PNG, PDF, PPT (PowerPoint), MP4 (video files), and URL links Image requirements: In PowerPoint, dimensions should ...