Files with fdf extension are portable document forms that were created using Adobe Acrobat.

There are 2 other file types using
the FDF file extension!

empty icon.fdf - Client Access Express format description

empty icon.fdf - Origin fitting function definition

Detailed description

Software that open fdf file

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FDF file extension - Adobe Acrobat Portable Document input form

What is fdf file? How to open fdf files?

File type specification:

Document file type icon Document file type

fdf file icon: fdf filetype icon

File extension fdf is most likely best known for its use for Adobe Acrobat Portable Document Input Form files, which are form documents that can be created by Adobe Acrobat and read by Adobe's Acrobat Reader.

It is a text file format used for data exported from PDF form fields. A .fdf file is typically smaller than PDF files because they only contain form field data not the entire form.

Note: This file format is quite often attached to spam emails. Prior to that, these messages would contain PDF, DOC or XLS spam content.

MIME types:

Updated: November 27, 2023

The default software associated to open fdf file:

Adobe Acrobat icon

Adobe Systems Incorporated logoAdobe Acrobat  Microsoft Windows software

Company or developer:
Adobe Systems Incorporated

Adobe Acrobat is fully featured document solution that works with PDF format and is able of both opening and editing of existing PDF documents, or creating new ones from scratch. Acrobat DC is the last version after Acrobat XI. You can purchase it as standalone desktop software. 

Adobe Acrobat for Mac icon

Adobe Systems Incorporated logoAdobe Acrobat for Mac  Apple macOS / Mac OS X software

Company or developer:
Adobe Systems Incorporated

Much like its Windows counterpart, the Mac version of Adobe Acrobat is software used view, create, manipulate, print and manage files in PDF document file format. Acrobat is available in three editions - Acrobat XI Pro, Acrobat XI Standard and Acrobat XI Suite as well as part of Creative Cloud.

Adobe Creative Cloud icon

Adobe Systems Incorporated logoAdobe Creative Cloud  Multiplatform software

Company or developer:
Adobe Systems Incorporated

Adobe Creative Cloud is latest member of Creative family. With this version Adobe moved from one-time fee to subscription based model, while no longer plans to offer one time purchase options like the users were used. There is either annual or monthly fee for using the whole bundle or just one program.

Help how to open:

Use Adobe Acrobat Reader. If you receive it as an e-mail attachment with small file size, you don't need to open it, because it contains only a spam text message.

To create/edit use Adobe Acrobat.
It can be created in Acrobat by selecting Advanced -> Forms -> Export Forms Data from the menu bar..

How to convert:

Use Adobe Acrobat to further export *.fdf files to other formats, for example to PDF.

Find conversions from fdf file:

fdf to pdf

fdf to xdp

Find converter to fdf file type:

pdf to fdf

xfdf to fdf

File identification strings:

HEX code: 25 46 44 46 2D
ASCII code: %FDF-

List of software applications associated to the .fdf file extension

Recommended software programs are sorted by OS platform (Windows, macOS, Linux, iOS, Android etc.)
and possible program actions that can be done with the file: like open fdf file, edit fdf file, convert fdf file, view fdf file, play fdf file etc. (if exist software for corresponding action in's database).

Click on the tab below to simply browse between the application actions, to quickly get a list of recommended software, which is able to perform the specified software action, such as opening, editing or converting fdf files.

Software that open fdf file - Adobe Acrobat Portable Document input form

Programs supporting the exension fdf on the main platforms Windows, Mac, Linux or mobile. Click on the link to get more information about listed programs for open fdf file action.

Microsoft Windows:

Main software associated with fdf file by default:
Adobe Acrobat small icon Adobe Acrobat
Other suggested software:
Adobe Acrobat Reader small icon Adobe Acrobat Reader

Apple macOS / Mac OS X:

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