How to open a CDF file: The best way to open an CDF file is to simply double. If Windows keeps asking you what program should be used to open the file, the problem is most possibly caused by broken files associations. Tip: Try to open the HDF file using a text-editor such as Notepad, as many file types contain simply contain unformatted plain-text and can viewed correctly using this method. If you have already installed the software to open it and the files associations are set up correctly.CDF file will be opened. Please check back soon for more information as we are constantly updating our file descriptions based on search frequency. We have yet to investigate this file type further, or there was not enough information available at the time to report accurately on the format. This data file format was added to our database by a visitor to this site, but no additional information was provided. If you are unable to open the file this way, it may be because you do not have the correct application associated with the extension to view or edit the HDF file. The best way to open an HDF data file is to simply double-click it and let the default assoisated application open the file. If you are aware of any additional file formats that use the HDF extension, please let us know. HDF extension are known as Hierarchical Data Format files, however other file types may also use this extension. Have you found, downloaded or received an HDF file, but don't know which software program is required to open it?īefore attempting to open an HDF file, you'll need to determine what kind of file you are dealing with and whether it is even possible to open or view the file format.Īnswer: Files which are given the.