With Filestar you get 0 different skills for working productively with Acrobat Forms Data (.fdf) files.
About .Fdf
Name
Acrobat Forms Data
Extension
.fdf
Format
Text
Category
Developer
Developer
Adobe
Description
Acrobat Forms Data (FDF) holds the field names and values of a filled PDF form, exported by Adobe Acrobat in PDF syntax. The form layout stays in the PDF; the FDF carries only the data, and importing it back into the PDF beside it fills the form.