This article explains what a PPT file is and how to open a PPT file or convert it to another format.
Quick PowerPoint Tip: Open a File in Slide Show Mode
A file with the PPT file extension is a Microsoft PowerPoint 97-2003 Presentation file. Newer versions of PowerPoint have replaced this format with PPTX.
PPT files are commonly used for both educational and office purposes, for everything from studying to presenting information to an audience.
Often these files contain several slides with text, sounds, photos and videos.