What is an X_T file?
An .X_T file is a Parasolid Model Part File developed by Siemens PLM Software. It stores 3D CAD model geometry, topology, and color data in a text-based format. Engineers use .X_T files as a standard exchange format to move 3D designs between different CAD programs. The binary equivalent of this format uses the .X_B extension.
How to open X_T files?
You can import .X_T files into CAD applications that license the Parasolid kernel. Common tools include SolidWorks, Siemens NX, and Onshape. If you do not have CAD software installed, viewer.online/x_t analyzes .X_T files to identify their exact format and creator software, shows which programs can open the file, and usually previews it.
Best practices and troubleshooting
A common issue with .X_T files is version incompatibility. If a user exports an .X_T file from the newest version of Parasolid, older software might fail to read it. If this happens, open the .X_T file in a standard text editor to check the header for its version number, and request an older export version from the original creator. For broader compatibility, you can convert the file. We recommend file conversion to sensible target formats like .STEP, .STL, or .OBJ on convert.guru.
Summary
viewer.online/x_t directly opens and previews .X_T files in the browser, eliminating the need to install software or troubleshoot compatibility issues.