Use 3D models and data visualizations to see patterns, trends and non-obvious relationships. The idea of this viewer is that you: Drag & drop an equirectangular photosphere image into the gray frame below, or.Try out the new interactive 3D structure viewer, iCn3D. Having the ability to store and view your 3D Model files online in a web-based 3D Viewer means that your 3D Models are available anywhere, on any device, wherever you go. Our free online 3D Model viewer is a powerful tool for viewing and analyzing your STL files, OBJ files, and STEP/IGES files on the go. 3d viewer online js brings powerful, beautiful, simple, and open 3D to everyone on the web.