pps PPS Overview
PPS (PowerPoint Show) is a presentation file that opens straight into full-screen playback instead of the editing workspace. It is not a separate file format: a PPS file uses the same PowerPoint 97-2003 binary structure as a PPT file, and the only meaningful difference is the extension, which tells PowerPoint to launch the deck in slide show mode rather than in the normal editing view.
Because the payload is identical, a PPS carries the same records as its PPT twin: slides, masters, shapes, embedded pictures, audio, video, speaker notes, animations, and transitions all survive intact. Renaming a .pps to .ppt does not convert anything and does not repair a damaged file. It simply stops the extension from forcing playback, which is why the two extensions round-trip so cleanly.
PPS was popular for distributing finished decks to viewers who only needed to watch them, and it remains common in email chains and archives from the PowerPoint 97 through 2003 era. Its weakness is discoverability rather than capability: nothing is stripped out, but the format signals "presentation, not source", so recipients often assume the content cannot be edited.[1][2]