Every digital file has a specific format that determines how the information it contains is decoded and then made accessible. The PNG format, for example, packs images into a few kilobytes so that they can be displayed on the Internet as easily as possible. The PPTX format is the answer for presentations created with PowerPoint: Projects with texts, images, animations, implemented Excel tables, etc. can be saved in this way to save space.
Even though the format was developed by Microsoft for its own application, PPTX files can also be created, opened and saved using PowerPoint alternatives.
The extension .pptx is composed of the suffix .ppt (an abbreviation for “PowerPoint”) used in older PowerPoint versions and a final “x”. The latter in this case stands for the fact that PowerPoint uses the markup language XML (Extensible Markup Language) to structure the data.