FDF

Adobe Acrobat Portable Document input form
File type: Document file
Files with fdf extension are portable document forms that were created using Adobe Acrobat.
Found 3 different file type records with the same fdf filename suffix.
What is fdf file?
File type category:
Document file
Date updated: January 2, 2025
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:
application/vnd.fdf
How to open fdf file?
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 fdf file?
Use Adobe Acrobat to further export *.fdf files to other formats, for example to PDF.
Suggested software to open fdf file:
Associated software actions with the fdf file
Software applications that can open fdf files:
Adobe Acrobat (Microsoft Windows)
Adobe Acrobat Reader (Microsoft Windows)
Adobe Acrobat for Mac (Apple macOS / Mac OS X)
Software applications that can edit fdf files:
Adobe Acrobat (Microsoft Windows)
Adobe Acrobat for Mac (Apple macOS / Mac OS X)
Software capable of saving fdf files:
Adobe Acrobat (Microsoft Windows)
Adobe Acrobat for Mac (Apple macOS / Mac OS X)
Programs for viewing fdf files:
Adobe Acrobat (Microsoft Windows)
Adobe Acrobat Reader (Microsoft Windows)
Adobe Acrobat for Mac (Apple macOS / Mac OS X)
Adobe Acrobat Reader for Mac (Apple macOS / Mac OS X)
Software apps that create fdf files:
Adobe Acrobat (Microsoft Windows)
Adobe Acrobat for Mac (Apple macOS / Mac OS X)
Software apps that print fdf files:
Adobe Acrobat (Microsoft Windows)
Adobe Acrobat Reader (Microsoft Windows)
Adobe Acrobat for Mac (Apple macOS / Mac OS X)
Adobe Acrobat Reader for Mac (Apple macOS / Mac OS X)
Software applications that handle other tasks involving fdf files:
Adobe Creative Suite (Microsoft Windows)
Adobe Creative Suite for Mac (Apple macOS / Mac OS X)
Adobe Creative Cloud (Multiplatform)
Client Access Express format description
File type category:
Various data file
Date updated: August 9, 2019
The fdf file extension is associated with the AS/400 Client Access Express, a program for Microsoft Windows, which allows users to connect PC desktop with AS/400 system.
The fdf file contains format description.
Origin fitting function definition
File type category:
Various data file
Date updated: August 12, 2019
The fdf file extension is related to the Origin, a graphing and data analysis software for Microsoft Windows operating system, developed by OriginLab.
The fdf file contains fitting function definition.
How to open fdf file?
Probably not meant to be accessed by the user.
How to convert fdf file?
Probably cannot be converted to anything else.
Suggested software to open fdf file:
Associated software actions with the fdf file
Software applications that handle other tasks involving fdf files:
Origin (Microsoft Windows)