Files with the SLDM extension are associated with Microsoft PowerPoint, versions 2007 or later. PowerPoint was developed by Microsoft and is currently the leading application for creating, editing and showcasing commercial and non-commercial presentations. It is available for both Windows and Mac OS.

PowerPoint presentations contain individual pages known as "slides" which are fully customizable. These may contain text, pictures, videos, graphics and other objects that can be arranged freely within the page.

Additionally, PowerPoint presentations may contain Macros. Embedding them into the document's structure is done via the Macro Recorder included in MS Office which can save command sequences and create macros to replicate them automatically.

Individual PowerPoint slides are saved as SLDX files. Macro-Enabled individual slides have the SLDM extension. However, there is no way to create SLDX or SLDM files directly from PowerPoint. Adding the SLDX extension to PowerPoint presentations when saving them won’t work either because the program automatically adds the default extension also. The only way to create them is to first create XML files with the appropriate code for PowerPoint slides and change the extension to SLDX or SLDM.