A VSD file is a drawing project saved by Visio, a program used to create technical drawings. It may contain visual objects, information flows, text, and other data. VSD files may also store connection information for imported data sources.
VSD file open in LibreOffice Draw 6.2
Visio drawings allow users to visualize and communicate complex information and are typically used in business settings. They can be used to create flowcharts, workflow diagrams, organizational charts, software diagrams, network diagrams, and database models.
Microsoft Visio is typically used to create and open VSD files. However, the files can also be viewed by other programs, such as iGrafx FlowCharter and LibreOffice.
The VSD format was more common in the 2000s, when it was the main file type associated with Visio. But the format was replaced by the .VSDX format in Visio 2013.