ShrinkIt

ShrinkIt (named NuFX archive and file format)
Filename extension	.SHK (regular NuFX archives), .SDK (NuFX disk images)
Initial release	1987?
Latest release	1.0.6 (GS), 3.4 (Apple II); GS: 30 April 1992; 32 years ago, A2: 24 January 1991; 33 years ago
Type of format	Data compression
Extended from	.BNY (Binary II envelope) .BQY (squeezed file in Binary II envelope) .BXY (NuFX in Binary II envelope)
Extended to	.SDK NuFX disk image

A NuFX archive is an archive file format that supports lossless data compression. It is usually given the file extension SHK; SDK may also be used to specify that the archive describes the entire contents of a disk.

History

Andy E. Nicholas designed the format as an improved replacement for the Binary II (.BNY) format, adding compression. He introduced it alongside a pkzip-like program called ShrinkIt for Apple II systems, which he later migrated to the Apple IIGS as GS-Shrinkit.

The specification was republished by Apple in its File Type Notes.^[1]

References

^ http://www.apple2online.com/web_documents/ft_e0.8002_shrinkit.pdf ^{[bare URL PDF]}

[1] ttp://www.apple2online.com/web_documents/ft_e0.8002_shrinkit.pdf ^{[bare URL PDF]}

[1]

v t e Archive formats
Archiving only	ar cpio shar tar LBR WAD WARC
Compression only	Brotli bzip2 compress gzip Zopfli LZMA LZ4 lzip lzop SQ xz Zstandard
Archiving and compression	7z ACE ARC ARJ B1 Cabinet cfs cpt dar DGCA .dmg .egg kgb LHA lrzip LZX MPQ PEA RAR rzip sit sitx SQX UDA Xar zoo ZIP ZPAQ
Software packaging and distribution	apk App APPX deb HAP ipa JAR WAR Java RAR EAR MSI MSIX Package (macOS) RPM XAP XBAP
Document packaging and distribution	OEB Package Format OEBPS Container Format Open Packaging Conventions PAQ
Comparison List Category

History

See also

References