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pdfadobefdf
Nishant
Nishant

Reputation: 21934

How does Adobe PDF store the form information?

I am working on a PDF file which needs to be auto-populated. I researched and found that Adobe forms uses the FDF format to export and import the form information. However, when I extracted the FDF of this PDF file using pdftk it was empty!

pdftk <input.pdf> generate_fdf output <output.fdf>

You can create a form just like a canvas painting, if so then it will be difficult to auto-populate.

So is FDF the only standard format in which a PDF file exports the form information or are there more out there to look for? Or in other words, if there is no FDF can I definitively say that it can't be auto-populated in any of the standard ways?

PS: This is the file I am dealing with. It is a bit surprising that Govt documents don't have FDF :-).

Update: Based on the information below, I corrected the question to mean FDF is the data exchange format; not the internal format.

Upvotes: 2

Views: 95

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