Aldus LZW
From Just Solve the File Format Problem
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(Created page with "{{FormatInfo |formattype=electronic |subcat=Compression |extensions={{ext|??~}}, others |released=≤1990 }} '''Aldus LZW''' is the signature of a compressed file format used ...") |
Revision as of 15:15, 6 March 2025
Aldus LZW is the signature of a compressed file format used for installation by some Aldus software products. It is very similar to Aldus PKZP.
Format details
There appear to be two variants of Aldus LZW: one for Macintosh, and one for PC / Windows 3.x.
It uses LZW compression, possibly identical to TIFF's LZW scheme.
Identification
The first 16 bytes of a file are ASCII "ALDUS LZW 1.00".
Sample files
- PM4DEMO1.ZIP → .../*.??~ (Windows)
- Mac Expert 2 → Applications/Aldus PageMaker 4.5C/PM 3 → Aldus/PPDs-PM4.5C/* (Mac) (at DiscMaster)
