An SKP file is a proprietary three-dimensional model file created with the 3D design program SketchUp. It can comprise of several different 3D elements or components such as shades, wireframes, and textures. An SKP file can contain the entire architecture or may consist of smaller designs (such as door or a chair) of a larger design. This lets the models defined in such files to be reusable by inserting into other SketchUp documents.
SKP files can be identified by their extension i.e. .skp that can easily be searched and found on a system by using the Operating System’s search feature.
The development, launching, and acquisition of SketchUp Software, is as follow.
2000 - Developed and launched by @Last Software
2006 - Search Engine giant, Google, acquired
2021 - Acquired by Trimble™
SKP File Format - More Information
SKP files are saved to disc in SketchUp’s proprietary binary file format. The SKP file format can store 2D images in addition to 3D images. These 2D documents can show plans, building details, and elevations as well.