PPSX read-only file contains a slideshow. PPSX files are created by Microsoft PowerPoint and its offshoots. PPSX file is an ZIP-compressed archive that stores data in Open XML format.

PPSX cannot be edited as it contains exported presentaion in its final form. The file can hold slides with graphics, text, transition effects, audio samples, charts, and tables. This format is used typically for business, educational, and academic presentations.