Making a powerpoint that\'s supposed to show a before and after of a website. Since it\'s currently a long website I\'d rather make a single long slide to put it on (20\" i
You can't. You can only have one slide size and one orientation per presentation.
Are you projecting the presentation or delivering it on a laptop?
If so, the size is sort of irrelevant.
Regardless of the slide size, the projected/displayed image will never be longer or wider than the projector/display accepts.
true, this option is not available in any version of MS ppt.Now the solution is that You put your different sized slide in other file and put a hyperlink in first file.
Although you cannot use different sized slides in one PowerPoint file, for the actual presentation you can link several different files together to create a presentation that has different slide sizes.
The process to do so is as follows:
Reference to Office Support Page where this solution was first posted. https://support.office.com/en-us/article/can-i-use-portrait-and-landscape-slide-orientation-in-the-same-presentation-d8c21781-1fb6-4406-bcd6-25cfac37b5d6?ocmsassetID=HA010099556&CorrelationId=1ac4e97f-bfe6-47b1-bab6-5783e78d126d&ui=en-US&rs=en-US&ad=US
True you can't have different sized slides. NOT true the size of you slide doesn't matter. It will size it to your resolution, but you can click on the magnifying icon(at least on PP 2013) and you can then scroll in all directions of your slide in original resolution.