A: No. They treat it as a generic binary file. You must use a specialized CAD viewer.
A DFT file viewer online offers several advantages over traditional viewers: Dft File Viewer Online
A360 Online Converter (same as above, but with export) or Zamzar (paid for PDF output). Dft File Viewer Online
Siemens’ own cloud-based solution is the gold standard for DFT files, ensuring 100% compatibility since they own the format. ShareCAD / GroupDocs: Dft File Viewer Online