(In older versions of PowerPoint, these options are located in the File menu.) 4. This will ensure that the text is large enough for the new size. If your slides already contain some content, scale up when given the option. Note that most posters use portrait orientation (taller than wide). (The two default options are for presentation slides on screens.)Įnter your page size. Click the drop-down and select Page Setup. Set the dimensions in the Design menu, then navigate to Slide Size. A4, for poster handouts: 8.5 inches by 11 inches.Small, for posting on billboards etc.: 11 inches by 17 inches.Medium, for windows and general hanging: 18 inches by 24 inches.Large, movie-style poster: 24 inches by 36 inches.PowerPoint has a maximum slide side of 52 inches wide and tall, so keep that in mind when planning your design. Design the PowerPoint poster at the maximum size it will be printed.