- For another FDF format, see FDF Image.
FDF (Acrobat Forms Data Format) is a format for storing and transferring data entered into a form in a PDF file. It is a mostly-text format based on PDF. Also used for exporting and importing annotations and comments.
FDF may be embedded in a PDF file; or it may be stored on its own in an .fdf file; or it may only exist "on the wire", and not be stored in a file at all.
If you try to open an .fdf file in Adobe Reader, it will try to find the associated PDF file, and open it.
- FDF is defined in the PDF specification.
- http://docs.appligent.com/fdfmerge/fdfmerge-form-data-format/#The_FDF_file_format - An example of FDF format