Software & Apps File Types What Is a PPSM File? How to open, edit, and convert PPSM files Share Pin Email Print File Types Design Cryptocurrency MS Office Windows Linux Google Drive Apps File Types Backup & Utilities View More By Tim Fisher General Manager, VP, Lifewire.com Tim Fisher has 30+ years' professional technology support experience. He writes troubleshooting content and is the General Manager of Lifewire. our editorial process Facebook Twitter LinkedIn Tim Fisher Updated November 27, 2019 A file with the PPSM file extension is a Microsoft PowerPoint Open XML Macro-enabled Slide Show file created with Microsoft PowerPoint. PPSM files open by default in the slideshow view, immediately launching the slideshow presentation. The format uses a combination of XML and ZIP to store its contents. PPTM is a very similar macro-enabled file format used with PowerPoint, but one that opens in edit mode when double-clicked rather than launching the presentation. Two other formats you may see in PowerPoint are PPTX and PPSX. Neither of these formats can run macros, unlike PPSM and PPTM; however, PPSX opens in slideshow mode automatically like PPSM, while PPTX does not. How to Open a .PPSM File PPSM files can be opened using Microsoft PowerPoint, but only if it is version 2007 or newer. Opening a PPSM file in an older version of PowerPoint requires the free Microsoft Office Compatibility Pack to be installed. You can still edit PPSM files by right-clicking the file and choosing New (which opens the file in PowerPoint), or by opening PowerPoint first and then browsing for the PPSM file and opening it. You can also open PPSM file without PowerPoint using Microsoft's free PowerPoint Viewer program. The Presentations program that's a part of the SoftMaker FreeOffice office suite will open PPSM files as well, and there may be other free presentation programs that can also open these files. If your PPSM file doesn't open with these slideshow programs, make sure you're not misreading the file extension. Some files use a similar file extension but have nothing at all to do with PowerPoint or presentation files in general. Examples of file extensions that are not PowerPoint files include PP, PRST, PSM, PS, PPR, and PPM. How to Convert a PPSM file Opening a PPSM file in PowerPoint lets you save it to a different format through the File > Save As menu. You can pick from lots of formats like PPTX, PDF, PPT, PPTM, POTM, and ODP. You can even use PowerPoint to convert PPSM to a video format (MP4 or WMV). Just use the File > Export > Create a Video menu item. If you want to convert your PPSM file to a single PDF file, another option is to do it online with Online2PDF.com. You may set it render each slide as a separate page in the PDF file, or you can choose to build separate PDF files for each slide.