Google's free 3D drawing software Sketchup has introduced an online version, which can be used without installing software. The downloadable version of Sketchup is divided into a free version and a paid version (annual fee of about TWD 20,000), while the web version is free. Through the website, you can easily create various 3D models, download the finished 3D drawings, and there are many ready-made objects that can be applied directly. In addition, you can register as a member and store files in the cloud.