If you don't have PowerPoint installed on your computer, you can still open and view presentations by using PowerPoint for the web or PowerPoint on your mobile device.
Use PowerPoint in a web browser
If you have a Microsoft account (hotmail.com, outlook.com, live.com, msn.com) or a Microsoft 365 work or school account, you can view and edit a presentation for free in a web browser. Save the file to OneDrive or Dropbox and use PowerPoint for the web to open it.
If you don't already have a Microsoft account, you can create one for free.
Get PowerPoint for a smartphone or tablet
The free mobile versions of PowerPoint let you open presentations on your smartphone or tablet:
PowerPoint Viewer has been retired
PowerPoint Viewer was retired on April 30, 2018. It's no longer available for download.