The DDFL file extension is related to the DiskDoubler a compression tool used to save space on Mac drives, developed by Symantec.

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DDFL file extension - Apple DiskDoubler file

What is ddfl file? How to open ddfl files?

File type specification:

Archive and compressed file type icon Archive and compressed file type

The DDFL file extension was used by DiskDoubler (DD, a data compression utility for compressing files on the Apple Macintosh platform. Unlike most such programs, which compress numerous files into a single archive for transmission, DiskDoubler was intended to compress single files "in place" to save space on the drive.

When such a file was opened, DiskDoubler would decompress the file before handing it off to the application for use. A later addition, AutoDoubler, added background compression, finding and compressing files automatically when the computer was idle.

It is obsolete tool without any support from developers (Symantec).

Help how to open:

This file type is not meant to be opened directly, there is no software that could open and work with it directly, or there is no information available in public sources about opening this file type. This is usually the case of some internal data files, caches, temporary files etc.

How to convert:

As far as we know, this .ddfl file type can't be converted to any other file format. This is usually the case of system, configuration, temporary, or data files containing data exclusive to only one software and used for its own purposes. Also some proprietary or closed file formats cannot be converted to more common file types in order to protect the intellectual property of the developer, which is for example the case of some DRM-protected multimedia files.

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