Explanation

.ipt is the file extension used by Autodesk Inventor, a 3D parametric solid modeling software. It is used to save part and assembly models, and is the native file format of Autodesk Inventor. When you create or save a part or assembly model in Autodesk Inventor, the software will automatically assign the .ipt file extension to the model.

An .ipt file contains all the information about the model, including its 3D geometry, constraints, parameters, and other data. It also includes the model's history, which is a record of all the operations that were performed on the model, such as adding or deleting features, changing dimensions, and so on. Because of this, an .ipt file is also commonly called as "history-based file",