PPS, PowerPoint Slide Show (.pps)
The PPS Presentation file format
PPS files are known in combination with the Microsoft PowerPoint program. There is not much difference between the PPS and the PPT file extension. The only difference recognizable between the two formats is that PPS files can not be edited (contrary to PPT files). While a PPS file extension opens directly in presentation mode, a PPT file open in the design mode of the program. The PPS file is used for presentations to be sent without the receiving part being able to edit or change the content.
Technical details of PPS files
PPS files include slides that feature either text, images, graphs, or lists. Saved in the PPS format, the file can be opened in Microsoft PowerPoint as well as in the PowerPoint Viewer. Contrary to the PPT file, which is open for editing and changing the contents of the slides, PPS files can not be edited, even when opened in the PowerPoint program. Thus, it takes up less space and can easily be sent to another user or device.