How to Open a PPT File Without Powerpoint. Microsoft PowerPoint is on over a billion computers worldwide, according to Robert Gaskins, one of the program's developers.

If you want to preview files in Windows 11/10 without opening them, then you can use QuickLook, File Viewer Plus, One Commander, or Seer app.

Warnings These instructions apply to Microsoft PowerPoint 2010. Earlier versions of PowerPoint may operate differently or not allow two iterations of the software to open in separate windows.

With the right tools, you can save time by previewing a variety of files in Windows 10 or Windows 11 without opening their applications.