StuffIt 5
Unknownarchive
The Stuffit Archive file format is a proprietary file compression format originally developed by Raymond Lau in 1987. It supports storing the Resource Fork alongside other files and is commonly used in Mac environments, though a Windows version has also been released.
Identify it
| Extensions | .sit |
|---|---|
| MIME types | application/x-stuffitapplication/x-sit |
| Signatures | 5374756666497420 at byte 0 (Stuffit) |
| PRONOM | fmt/639fmt/1459fmt/1460 |
| Wikidata | Q59535034 |
| Apple UTI | com.stuffit.archive.sit |
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0Versions and variants (2)
- Stuffit Archive File 1.5Unknown
- Stuffit Archive File 1.6-4.5Unknown
Sources
From Just Solve the File Format Problem (File Formats Wiki), PRONOM, Wikidata. Updated 2026-10-24.