What is a .PRT file?
PRT is a part file used by several CAD systems, including Siemens NX and PTC Creo.
- Did you know
- Several rival CAD systems all happen to use the .prt extension for parts.
- The PRT made by Siemens NX (formerly Unigraphics) is built on the Parasolid geometry kernel, while PTC’s PRT comes from Pro/ENGINEER and Creo.
- Because each program writes its own proprietary structure, an NX PRT and a Creo PRT are not interchangeable despite the shared extension.
- What Analyser reads
- Identify CAD files and read header metadata: AutoCAD DWG (DXF now opens as a 2D drawing preview - see Diagrams), SolidWorks (SLDPRT, SLDASM, plus .sldreg Settings Wizard backups - release year, settings groups and the saved registry keys - and SOLIDWORKS Visualize .svap appearances and .svpj projects, opened as the ZIP packages they are), Fusion 360 (F3D), Inventor (IPT, IAM), Rhino (3DM) and Grasshopper (GH, GHX), SketchUp (SKP), 3ds Max, Cinema 4D, Houdini, ZBrush, Maya, CATIA, Eagle, and KiCad.
- Depth of analysis
- .PRT is an identification-grade format: Analyser recognises it from its bytes and decodes the header metadata it carries, rather than opening it in a full viewer. Formats that do get a full viewer are marked "Full" on the formats page.
- Open a .PRT file
- Drag a .PRT file onto the Analyser home page (or tap to pick one). It is identified entirely in your browser - nothing is uploaded, there is no account, and it works offline once installed.