PPT is a presentation format in the popular Power Point application. A file of this format is an editable slide show that consists of a sequence of slides. Directly in the slides can be used not only formatted text, but also video, images, sound and visual effects. The name PPT is an abbreviation for PowerPoint Presentation. The developer of the format is Microsoft. PPT files are created as part of the Microsoft Office PowerPoint software package. Support for the format is possible on Mac OS and Windows, as well as on devices based on Android.
PDF is short for Portable Document Format, which can be translated from English as “Portable Document Format”. It was developed by Adobe Systems for use by US federal authorities as a tool for storing working documents. This is a universal cross-platform format, which is now standard for electronic documents. It serves to convert text files (including photographs or other images) into electronic documents without any loss. To read PDF files you need special programs - Adobe (Acrobat) Reader, PDF-Viewer and others.