.IPN File Extension
What is an IPN file?
An IPN file is a presentation created using Autodesk Inventor, a CAD program used to prototype mechanical products. It is comprised of one or more scenes that, most often, give an overview of an Inventor assembly (.IAM file). Inventor users create IPN files to show details of in-progress or finished assemblies to other users.
Engineers and product designers use Autodesk Inventor to create and test 3D prototypes of mechanical products. These prototypes are called assemblies. When an Inventor user wants to show off or receive feedback on an assembly (or the assembly's component parts, or multiple assemblies), they can create an Inventor presentation. Presentations consist of one or more scenes that show different views and/or animations of an assembly.
For example, an Inventor user might create a scene that animates how an assembly's parts fit together. Or, they might create a scene that zooms in on a specific portion of their design, which they are hoping to receive feedback on. After a user has finished adding scenes to their presentation, they can export the presentation as an .AVI or .WMV video or a series of .PNG images, so other users can review the presentation.
NOTE: If you modify a part (.IPT file), assembly (IAM file), or drawing (.IDW file) included in an IPN file, Inventor will automatically update the IPN file to reflect your changes.
How to open an IPN file
You can open and edit IPN files only in Autodesk Inventor (Windows). To open an IPN file, select File → Open from Inventor's menu bar. Then, navigate to and open your IPN file.