File Extensions Abbreviations and Acronyms

1. RDEF
   Geoworks UI resource file (old)
2. RL4
   Bitmap graphics
3. RL8
   Bitmap graphics
4. RS
   Resource fork of a Macintosh file
5. S1K
   S1000 Simnet Format
6. S3I
   Sample file (Digiplayer - ST3)
7. S3I
   Scream Tracker 3 Instrument
8. S3M
   Scream Tracker III 16-channel Music file
9. S3M
   Screamtracker 3 Module
10. SCODL
    Agfa slide file Bitmap graphics
11. SCZ
    Wingz Data file
12. SCZ
    Smartdraw Collection Package File
13. SDX
    Sample DUMP Exchange File
14. SDX
    Sample Midi Dump Exchange
15. SDX
    Kivuto Secure Download Manager File
16. SIX
    Sixel file Bitmap graphics
17. SIXEL
    Sixel file Bitmap graphics
18. SKCARD
    SideKick Datafile
19. SKCARD
    Starfish Sidekick Card File
20. SPRITE
    Animation (Sizzler)

Last updated: March 20, 2022 — Total entries: 12,444