WordStar for Windows document
File type: Document file
A ws4 file is a document created or saved by WordStar for Windows, a word-processing program.
It stores the text and document formatting used by the WordStar document.
File type category:
Document file
Date updated: October 27, 2026
The ws4 file extension is associated with WordStar for Windows, the Windows version of the WordStar word processor. WordStar originated on CP/M and was later available for MS-DOS and Microsoft Windows.
A ws4 file contains a document created or edited in WordStar. It is a proprietary document format intended for use with the WordStar software rather than a general-purpose text format.
WordStar for Windows is legacy software, so the format is no longer commonly used on current systems. Files may therefore require the original program or a compatible older environment for full document fidelity.
Open the ws4 file with WordStar for Windows on Microsoft Windows. In the program, use its Open command and select the file.
Because WordStar for Windows is legacy software, it may not run directly on a current Windows installation. If it cannot be installed or run, use an older compatible Windows environment and make a copy of the original file before testing it.
The most reliable way to convert a ws4 file is to open it in WordStar for Windows and save or export the document to a format supported by that installation, such as plain text or another available document format.
If WordStar for Windows is unavailable, conversion may require access to an older compatible Windows environment.
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