What is a WSD file?
A .WSD file has multiple possible meanings depending on the software that created it. Most commonly, it is a PlantUML source file used to generate UML (Unified Modeling Language) diagrams from plain text. Historically, a .WSD file is a WordStar Document, which was a highly popular word processor developed by Micropro International in the 1980s. Other systems also use the .WSD extension, including WSCAD SUITE for electrical CAD projects, WAGO-I/O-PRO for automation files, and Wonderware InTouch for historical data logs.
How to open WSD files?
Because a .WSD file can be a text diagram, a legacy document, or a complex CAD format, it is difficult to know which program you need. A text editor like Notepad++ or Visual Studio Code will easily open PlantUML diagrams. For legacy documents, specialized emulators or word processors are required.
To remove the guesswork, viewer.online/wsd analyzes .WSD files to identify their exact format and creator software, shows which programs can open the file, and usually previews it.
File Conversion
If you need to share your .WSD file with others, you should convert it to a modern format. We recommend converting text-based diagrams to .PNG or .SVG, and legacy text files to .PDF or .DOCX. You can easily handle this conversion on convert.guru.
Summary
viewer.online/wsd directly opens and previews .WSD files in the browser, eliminating the need to install software or troubleshoot compatibility issues.