When deciding which of the best 3D file converter to download and use, first consider if a free or budget software program will suit you fine. Which type of 3D file converter is best for you? We've featured the best AutoCAD to PDF converters. Uploads and downloads are relatively speedy, although the limit of 50 MB for uploads can be problematic if you have large 3D files. Helpfully, if your model is split into multiple files, the batch upload can be used to provide Greentoken with all the necessary files at once. The online interface does support batch conversion, but you can only upload a maximum of five files at a time. Notably, though, conversion to 3DP is not supported by Greentoken. You can convert files to STL, STLB, COLLADA, OBJ, 3DS, PLY, JSON, and X. What’s particularly nice about it is that it also supports a wider variety of outputs than other free tools. The platform can handle any of 52 3D file format inputs, including all of the most popular proprietary and neutral formats. Greentoken offers an impressive range of file support for a free online tool.