".ppt" and ". Pptx "is two common suffixes of PPT files. The difference between the suffixes of PPT files is also the difference of file storage formats.

Over the years, with the continuous introduction of new versions of office, from 2003 to 20 19, the user interface has been continuously improved, the functions have been gradually improved, and the saved formats have been continuously upgraded.

".ppt" and ". Pptx "are two common presentation formats.

". The ppt format was generated before 2003. You can open any format compatible with any version of PowerPoint, but many new special effects are not supported. ".pptx" is a file generated by power point above Office 2007. It can only be opened in PPT above 2007, adding a slide effect.