Files with the RTFD extension contain a formatted text document and any files attached to it, such as images or animations. RTFD files, also known as Rich Text Format with Attachments, are a standard way of saving documents in TextEdit software for NeXTSTEP and macOS systems.
After converting the file to the new format, you will be able to use other programs to support it. Keep in mind, however, that the RTFD file after converting to BEAN may differ slightly from the original. The most important information should be kept, but if you want the file after conversion from RTFD to BEAN to be the same, you have to do this carefully and choose the proper application from the list below.
There is no guarantee, of course, that the conversion will come up to all your expectations, but it will certainly help you. If, after all, the effect of converting RTFD to BEAN does not meet your expectations, you can simply try to find on the Internet a different version of your file in RTFD format, properly converted to a BEAN file by someone else. If this fails, use the information provided in the further part of the website.
Unfortunately, if after performing the two previously described steps (trying to find your RTFD file converted by someone else, and the attempt to convert it to BEAN on your own) you still have a problem with your file, then there are only a few solutions left. You can once again try to find and install an application that can open the RTFD file in its original format (without conversion to BEAN file). Such a solution will be difficult to implement, but it certainly will give the best result.