To download a Prezi presentation as a PowerPoint (.PPTX) file, you can use the export feature directly from your dashboard or within the presentation editor. From the Prezi Dashboard
There is no native "Export to PPTX" button in Prezi. This is a deliberate design choice by Prezi to keep users within their ecosystem. However, a hybrid workflow exists for professionals who need to make the jump. how to download ppt from prezi
If you still have access to Prezi Classic: To download a Prezi presentation as a PowerPoint (