What is a DWFX file?
A .DWFX file is a Design Web Format XPS File created by Autodesk. Professionals use these files to share 2D and 3D CAD (Computer-Aided Design) data for review. They contain drawings, 3D models, graphics, and object properties. The .DWFX format is based on Microsoft's XPS (XML Paper Specification) format and functions as a standard ZIP archive. This allows designers to share rich project data securely without sharing the original source code.
How to open DWFX files?
To view these files natively on a desktop, you can use Autodesk Design Review or AutoCAD. Historically, the native Microsoft XPS Viewer built into Windows could also display 2D .DWFX designs. Since the underlying structure is a ZIP container, a useful technical workaround is to rename the file extension to .ZIP and extract the contents using an archive tool like 7-Zip. This lets you inspect the internal XML files, properties, and image assets manually.
Software and tools
Beyond basic viewers, enterprise users rely on tools like Navisworks to combine .DWFX files with other 3D models for clash detection. Developers can also use the Autodesk Platform Services (formerly Forge) APIs to programmatically upload, translate, and render .DWFX files in web applications.
Summary
viewer.online/dwfx analyzes .DWFX files to identify their exact format and creator software, shows which programs can open the file, and usually previews it. Because .DWFX files use the known ZIP format, viewer.online/dwfx can safely open and display them online, eliminating compatibility problems.