.dd

File Type DiskDoubler Archive IconDiskDoubler Archive
File Format Proprietary (Symantec)
Usage Open manually
Rank ★ ☆ ☆  Uncommon
Description

Compressed file archive created by Macintosh DiskDoubler for Mac OS Classic; uses the LZ78 compression algorithm; compresses files in place on the hard drive, which are expanded on-the-fly when opened; compressed automatically in the background using AutoDoubler.

DiskDoubler was later replaced by Now Compress and Stuffit SpaceSaver. DiskDoubler is not available for Mac OS X.

Open With
macOS

IconSymantec Norton DiskDoubler Pro

IconThe Unarchiver

IconSuperDoubler

Updated 2007
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