VSDX is the file extension for drawings created with Microsoft Visio, a diagramming and vector graphics application. It's the primary file format used by Visio 2013 and later versions, replacing the older .VSD format. VSDX files store a wide range of diagrams, including flowcharts, network diagrams, organizational charts, floor plans, and engineering designs. The format is based on the Open Packaging Conventions (OPC) standard, which is a ZIP-based container that holds XML files and other resources. This allows for better data recovery and interoperability compared to older Visio formats. VSDX files can contain shapes, text, images, and metadata, all organized within the XML structure. The format supports various features like data linking, custom shapes, and automation through VBA macros. While Visio is the primary application for creating and editing VSDX files, other applications and viewers can open and display them, although editing capabilities may be limited.