Using PowerPoint you can configure your Slideshow to start automatically when someone open the powerpoint file. In fact, the .pps is the file extension created for this purpose. .PPS stands for powerpoint Slideshow.
We already have explained how to configure powerpoint to start Slideshows automatically. By using this technique you can share your powerpoint presentations and prevent the users who receive it to edit it before the Slideshow plays. See more in Autostart powerpoint 2010.
Convert PPS to PPT and viceversa
Here is a small tip. If you have a .ppt presentation file but want to convert PPT to PPS, then you can simple rename the file and change the file extension. The format is the same and just the mode it plays is changed when you rename the file.
Detailed information for file extension PPT
Primary association: powerpoint
Company: Microsoft Corporation
Mime type: application/vnd.ms-powerpoint [official], application/mspowerpoint, application/ms-powerpoint, application/mspowerpnt, application/vnd-mspowerpoint
application/powerpoint, application/x-powerpoint, application/x-m
Identifying characters Hex: D0 CF 11 E0 A1 B1 1A E1 00 00 00 00
Related links: XnView, Free Microsoft Viewer, OpenOffice.org, Zoho Viewer (Web Viewer)
Alternatively, if you need to share PPT online but the user will open it in a different device, for example a tablet or smartphone, then the mode it will open will be relied to the way the software uses to open the file. Depending on the application that you use to open the file in the device, for example Android, iPhone, Playbook or Blackberry, it may open differently.