Since PPT files require a specialized software application in order to be accessed or modified, it is easier to distribute them after converting them to other formats.
One way to manage them with greater ease is to export each presentation slide to images that can be opened by a wide range of utilities.
Users will typically have the possibility to choose the output format they prefer, and the most common ones are BMP, JPEG and PNG.
It should be noted that when converting PPT files to images, whatever audio or video objects the presentation might have will be lost.