What is difference Between PPT and PPTX?

The main difference is PPT is the older format and PPTX is the newer format used by PowerPoint 2007 and later.

PT and PPTX are both file extensions for PowerPoint presentations.

PPT is the older format used by PowerPoint 97-2003, while PPTX is the newer format used by PowerPoint 2007 and later.

PPTX files are based on the XML format, which makes them more compatible, secure, and efficient than PPT files.