.VSD File Extension

Drawing project saved by Visio, a program used to create business diagrams; may contain visual objects, information flows, text, and other data; may also store connection information for imported data sources.

Visio drawings allow users to visualize and communicate complex information. They can be used to create flowcharts, workflow diagrams, organizational charts, software diagrams, network diagrams, and database models.

VSD files can be viewed with the Microsoft Visio Viewer program (vviewer.exe).