List of RISC OS filetypes
filetypes use metadata to distinguish file formats. Some common file formats from other systems are mapped to filetypes by the MimeMap module. Such mapping was previously handled by DosMap.
The MimeMap module maps filetypes to and from MIME content types, dotted filename extensions and Apple's Uniform Type Identifiers.
Requests for new filetype allocations for all versions are handled centrally by RISC OS Open.
RISC OS filetypes
Filetypes were originally classified by Acorn into distinct ranges:This range of filetypes was intended for personal use in closed systems, not for general distribution. Nevertheless, many programs using these types were distributed, especially as Public-domain software. Consequently there are many clashes.| Hexadecimal type | Name | Use | Connected party | Mapped equivalent |
| 000 | Crunched | Cruncher compressed file | ACE/Arc Angels | |
| 000 | MusDump | Vivaldi compressed music file | ||
| 000 | STracker | Tracker music file | ||
| 001 | STracker | Amiga ProTracker/NoiseTracker music file | Hugo Fiennes, The Serial Port | |
| 001 | Castles | Castles game file | ||
| 002 | PlayMod | Music file | ||
| 002 | SampDump | Vivaldi compressed sample | ||
| 002 | STracker | Tracker tune | ||
| 003 | ArmSI | Speed indicator results | ||
| 004 | AOutline | ArcOutline file | Paul Hobbs | |
| 004 | AIM | Archimedes Image Manager 256x256 monochrome bitimage | Wild Vision | |
| 005 | ScotGame | Saved game file | ||
| 006 | ScotSave | Saved game image | ||
| 006 | PathFile | unknown | ||
| 006 | WildV12 | Wild Vision Hawk V12 512x512 monochrome bitimage | Wild Vision | |
| 007 | LCrypted | Encrypted file | ||
| 008 | GolfDemo | Golf game file | ||
| 00A | Armony | !Armony music file | ||
| 00A | IcnStorm | IconStorm sprite file | ||
| 00B | Matrix | Matrix tracker music file | ||
| 00B | MegaBord | unknown | ||
| 00C | Circuit | PCB layout file | ||
| 00F | Pottery | Solids of Rotation 3D mesh | Acorn User magazine | |
| 010 | AIMinfo | Archimedes Image Manager file | ||
| 010 | Mailabel | Label printer file | ||
| 011 | HelpText | Help text file | ||
| 012 | AIM Cfg | Archimedes Image Manager configuration file | ||
| 016 | PlnPg | unknown | ||
| 017 | PlanF | unknown | ||
| 021 | compress | Compressed file | ||
| 022 | PGP | Pretty Good Privacy encrypted file | ||
| 03C | WordSq | Word square puzzle definition | Matthew Eglise | |
| 040 | Wordsrch | Word search puzzle definition | ||
| 041 | Resource | unknown | ||
| 041 | Widget4 | 256x256 monochrome bitimage | ||
| 042 | Widget5 | 512x512 monochrome bitimage | ||
| 042 | SmpleDTP | Simple DTP document | ||
| 044 | Spray | Painting program spray brush | ||
| 045 | FracPars | unknown | ||
| 046 | ColorMap | Bitimage palette file | ||
| 050 | 3DPlanes | 3D mesh | ||
| 050 | Filer | Filer settings | ||
| 061 | Z-Code1 | Infocom adventure game | Infocom | |
| 062 | Z-Code2 | Infocom adventure game | ||
| 063 | Z-Code3 | Infocom adventure game | ||
| 064 | Z-Code4 | Infocom adventure game | ||
| 064 | C64 | Commodore C64 executable | ||
| 065 | Z-Code5 | Infocom adventure game | ||
| 066 | Z-Code6 | Infocom adventure game | ||
| 067 | Z-Code7 | Infocom adventure game | ||
| 068 | Z-Code8 | Infocom adventure game | ||
| 068 | BigMArt | BigMArt15 file | ||
| 069 | BigMArt2 | BigMArt15 file | ||
| 070 | QuakePAK | Id Quake game archive file | ||
| 073 | Sticky | unknown | ||
| 077 | FTPc | FTPc user menu configuration file | ||
| 082 | TauFile | Tau document | Tim Birks | |
| 083 | TauStyle | Tau stylesheet | Tim Birks | |
| 084 | PIC16C84 | PIC programmer file | Mike Cook | |
| 099 | Puzzle | Puzzle game | ||
| 0AA | Indexer | Indexer file index | ||
| 0AB | PPPTrack | unknown | ||
| 0AC | DiscBox | unknown | ||
| 0AD | Split | Fragment of larger file | Adam Hamilton | |
| 0B2 | SoftList | unknown | ||
| 0BA | TaskBAS | BASIC in Taskwindow | ||
| 0BB | BBCRun | BBC application script | ||
| 0BB | MegaBord | unknown | ||
| 0BC | PCRun | PC application script | ||
| 0CC | Card | !Card2 file | ||
| 0CC | HellFile | unknown | ||
| 0CD | CDTrack | AudioFS2 CD music track | ||
| 0CE | CDData | AudioFS2 CD data track | ||
| 0D1 | AddrList | Address and contact list | ||
| 0D7 | GameBoy | Nintendo GameBoy emulator game image | ||
| 0D8 | GBSnap | Nintendo GameBoy emulator snapshot | ||
| 0DC | Keystrip | Keyboard layout | ||
| 0DE | BackMenu | BackMenu program configuration | ||
| 0E3 | SSSheet | !SSS spreadsheet | Chris Stretch | |
| 0ED | SprColor | Sprite extended palette file | ||
| 0F5 | EPSI | Encapsulated PostScript with device independent preview | ||
| 0F8 | HelpFile | Help text file | ||
| 0F8 | MPEG | MPEG video | Paul LeBeau | |
| 0FA | RayMacro | Ray tracer macro | ||
| 0FB | RayLib | Ray tracer library | ||
| 0FC | Ray3d | Ray tracer scene | ||
| 0FD | F-Shapes | unknown | ||
| 0FD | Probase | Probase database file | ||
| 0FD | Z88Link | Cambridge Computer Z88 Link archive file | John Allen | |
| 0FE | Psion | Psion Organiser II file | John Allen | |
| 0FE | F-Pal | unknown | ||
| 0FF | Used | A file that has been used | ||
| 0FF | FineArt | FineArt drawing | ||
| 0FF | Diss | unknown | ||
| 0FF | F-Paper | unknown | ||
| Hexadecimal type | Name | Use | Connected party | Mapped equivalent |
| Hexadecimal type | Name | Use | Registrant or connected party | Mapped equivalent |
| 100 | 1stSheet | 1st Statistics package | ||
| 100 | BackDrop | Desktop background setup | ||
| 101 | CalcSprd | Calc spreadsheet file | ||
| 101 | Phone | unknown | ||
| 102 | SpllDict | Spelling dictionary | ||
| 102 | Perl | Perl programming language script | ||
| 103 | UniMode | Screen mode definition | Maurice Hendrix | |
| 107 | OreDBase | Oregan database file | ||
| 108 | DataVox | SysBeep sound file | ||
| 109 | Glazier | unknown | ||
| 10A | SySample | Digital Symphony sound sample | ||
| 10B | Symphony | Digital Symphony song | ||
| 10C | Keyboard | Keyboard layout | ||
| 10F | CLIcon | IconCLI file | Olly Bett | |
| 110 | RLaB | unknown | ||
| 111 | MSDOS | PKArc archive file | David Pilling | |
| 111 | MatLabSc | MatLab file | ||
| 111 | RSDOS | unknown | ||
| 112 | MatLabFn | MatLab function | ||
| 112 | Stasis | unknown | ||
| 113 | FastSpr | Sprite file | ||
| 113 | ProjMan | Project management file | ||
| 113 | MoleAnim | Modeller molecular animation | ||
| 116 | DemoMole | Modeller molecular animation demonstration | ||
| 118 | Angband | Angband saved game file | ||
| 11A | Z-Code | Infocom game file | Infocom | |
| 11D | TAP | Z80Em compressed sound sample | Warm Silence Software | |
| 120 | ANSIText | Text in ANSI encoding | ||
| 122 | *Genetic* | Genetic algorithm data | ||
| 123 | Creator | unknown | ||
| 123 | ALPS | unknown | Alpine Software | |
| 127 | MOPAC | RasMol molecule definition | Roger Sayle, Martin Wuerthner | |
| 128 | MOL | RasMol molecule definition | Roger Sayle, Martin Wuerthner | |
| 128 | Pifile | unknown | ||
| 129 | *Alchemy* | RasMol molecular coordinates | Roger Sayle, Martin Wuerthner | |
| 12A | *PDB* | RasMol protein databank coordinates | Roger Sayle, Martin Wuerthner | |
| 12B | RasMolSc | RasMol script | Roger Sayle, Martin Wuerthner | |
| 130 | AntiGrav | unknown | ||
| 138 | MapprMap | Mapper_O 2D map | Nicholas Kingsley | |
| 139 | 3DScene | TopModel 3D scene | ||
| 13C | JFPatch | Assembler patch file | Justin Fletcher | |
| 144 | Copier144 | unknown | ||
| 152 | PolyData | Polyhedron definition | Fortran Friends | |
| 153 | Cabri | Cabriolet dynamic geometry | Mike Borcherds | |
| 154 | SR2000 | unknown | ||
| 156 | PsiWord | Psion Series 5/7 document | Psion | |
| 156 | Squished | Compressed file | ||
| 157 | *PsiSheet* | Psion Series 5/7 spreadsheet | Psion | |
| 157 | Playlist | unknown | ||
| 158 | Psion | Psion Series 5/7 general file | Psion | |
| 159 | PsiRecrd | Psion Series 5/7 audio | Psion | |
| 15A | PsiOPL | Psion Series 5/7 OPL program | Psion | |
| 15B | PsiData | Psion Series 5/7 database | Psion | |
| 15C | *PsiAgnda* | Psion Series 5/7 Agenda appointments diary | Psion | |
| 160 | Copier160 | unknown | ||
| 164 | Copier164 | unknown | ||
| 164 | C64-Disc | Commodore C64 archive | ||
| 16D | OrgData | Organizer appointment diary & contacts | ||
| 172 | Copier172 | unknown | ||
| 180 | Copier180 | unknown | ||
| 180 | TransArc mail file | |||
| 188 | Flash | Macromedia Flash animation | Macromedia | |
| 198 | Encoded4 | Arc World Encoder output | ||
| 199 | Encode4 | Arc World Encoder input | ||
| 1A0 | TSAC | unknown | ||
| 1AA | CSSC | CSSC file | Raffaele Ferrigno | |
| 1AB | Address | Address book file | Alex Hopkins | |
| 1AC | Project | unknown | ||
| 1AD | AMPEG | Audio MPEG stream | ||
| 1AD | Protector | unknown | ||
| 1BC | Imagen | HTML image map | ||
| 1C0 | JSW_Game | Jet Set Willy game | ||
| 1C1 | JSW_Data | Jet Set Willy scenery file | ||
| 1CA | HotKeys | Key accelerator definition | ||
| 1CF | Conjugez | unknown | ||
| 1DF | Objects | unknown | ||
| 1EC | Crypt | Encrypted file | Stephen Early | |
| 1F1 | Tiles | unknown | ||
| 1FF | TData | Tiger file | Graham Crow | |
| 1FF | OldSong | unknown | ||
| 200 | CAIFSArc | Archive file | ||
| 200 | CFCirc | unknown | ||
| 200 | GraphSrc | unknown | ||
| 201 | Z80 COM | Z80Tube executable file | ||
| 202 | Song | Mascom2 song | Thomas Olsson | |
| 204 | Typeface | Italicer Typeface file | A.E.Hersee | |
| 222 | DateMark | unknown | ||
| 300 | TimeStep ImProcess | |||
| 371 | RayShade RGB | |||
| Hexadecimal type | Name | Use | Registrant or connected party | Mapped equivalent |
| Hexadecimal type | Name | Use | Registrant or connected party | Mapped equivalent |
| 601 | CCIR 601 | Comité consultatif international pour la radio | ||
| 690 | Translator Clear | John Kortink | ||
| 691 | Atari ST DEGAS | ,, | ||
| 695 | GIF | GIF File | ||
| 697 | PC Paintbrush | ZSoft Corporation | ||
| 698 | RayShade RAW | Steve Koren | ||
| 699 | RayShade | Mark Terrence VandeWettering | ||
| 69D | Targa | Truevision TGA | Truevision | , |
| 7A0 | TimeStep satellite image | |||
| B22 | BBC Micro DFS disc image | BeebIt | Michael Foot | |
| BA6 | Excel | Microsoft Excel | Microsoft | |
| BBC | BBC ROM | BBC ROM | Acornsoft | |
| BDF | Firewrkz | Fireworkz | Colton Software | |
| BE0 | Recordz | Fireworkz Database File | Colton Software | |
| BE1 | Resultz | Fireworkz Spreadsheet File | Colton Software | |
| BE8 | PhotoCD | Eastman Kodak | ||
| C1C | Workz | Fireworkz Word Processor | Colton Software | |
| C1D | FwrkzTem | Fireworkz Template File | Colton Software | |
| C1E | FwrkzTem | Fireworkz Command File | Colton Software | |
| C25 | AWord | Acorn Advance Wordprocessor | Acornsoft | |
| C26 | ASheet | Acorn Advance Spreadsheet | Acornsoft | |
| C27 | ADBase | Acorn Advance Database | Acornsoft | |
| C28 | AGraph | Acorn Advance Graph | Acornsoft | |
| C32 | RTF | Rich Text Format | ||
| C4B | CmprDraw | Compressed Draw File | 4Mation | |
| C6A | smArt | smArt File | 4Mation | |
| C6B | NootBook | Noot File | 4Mation | |
| C85 | JPEG | JPEG | Joint Photographic Experts Group | , |
| CAE | HPGLPlot | Hewlett-Packard graphics language | Hewlett-Packard | |
| CAF | IGES | IGES graphics | ||
| CC3 | Poster | Poster File | 4Mation | |
| CDD | Ovation | Ovation DTP File | ||
| CE5 | TeX | TeX | ||
| D21 | PDCmdFile | PipeDream Command File | Colton Software | |
| DB0 | Lotus 1-2-3 | Lotus 1-2-3 | ||
| DB1 | DBaseIndex | DBase index | ||
| DB2 | DBaseII | DBase II | ||
| DB3 | DBaseIII | DBase III | ||
| DB4 | SuperCalc | SuperCalc III | ||
| DDC | Archive | Zip | David Pilling/Mark Smith | |
| DDE | PDream | PipeDream | Colton Software | |
| DE2 | ProArtisan | Clares Micro Supplies | ||
| DEA | DXF | Drawing Exchange Format | ||
| DFA | Watford digitiser | Watford Electronics | ||
| DFE | CSV | Comma-separated values | ||
| Hexadecimal type | Name | Use | Registrant or connected party | Mapped equivalent |
| Hexadecimal type | Name | Use | Mapped equivalent |
| OrUpgrd | Oregano upgrade | ||
| PPD | PostScript Printer Description | ||
| Monitor | Cerilica Monitor gamma correction curves | ||
| PlugIn | Cerilica Vantage plug-in | ||
| LaTeX | LaTeX document source | ||
| ISO-9660 | CD-Blaze CD image | ||
| ADB | New Font | Outline font | |
| Portable Document Format | |||
| Director | Macromedia Director animation | ||
| Java | Java executable | ||
| MSWord | Microsoft Word Document | ||
| Replay | Acorn Replay video | ||
| Generic Saved Game | |||
| AE9 | Alarm | Alarm settings | |
| AF0 | ARCWriter | ArcWriter document | |
| AF1 | Music | Maestro musical score | |
| PostTray | Acorn Mailman Intray | ||
| PostBox | Acorn Mailman mail received | ||
| PostFile | Acorn Mailman filed mail | ||
| PostData | Acorn Mailman setup | ||
| SimTrace | Acorn ASim trace file | ||
| AF7 | HelpInfo | Help | |
| AF8 | 1stWord+ | First Word Plus | |
| AF9 | DtpDoc | Acorn DTP document | |
| AFA | DtpStyle | Acorn DTP style sheet | |
| GCODE | Acorn GCODE intermediate file | ||
| GCAL | Acorn GCAL source file | ||
| AFE | Mouse | Mouse event record | |
| AFF | DrawFile | Draw vector drawing | |
| Hexadecimal type | Name | Use | Mapped equivalent |
| Hexadecimal type | Name | Use | Connected party | Mapped equivalent |
| E13 | Drummer | The Drummer drum pattern | ||
| E92 | DiscIndx | Disc index | ||
| ECB | PCBFile | PCB track layout file | ||
| ECD | TeleSoft | unknown | ||
| ECF | ECFData | Clares Pro-Artisan extended colour fill | ||
| ED0 | RawSound | DSEdit audio | ||
| ED1 | EdSProg | EdScheme file | Lambda Publications | |
| EEA | TinyLogo | Tiny Logo program | ||
| EEB | TinyDraw | Tiny Logo drawing | ||
| F09 | WiniUtil | BBC Micro Winchester Utility | Acorn | |
| F0E | BasicIV | BBC Master 128 BASIC | ||
| F1B | 65Host | Acorn BBC Micro Emulator file | Acorn | |
| F7C | Teletext | Teletext screen data | ||
| F89 | GZip | GNU Zip archive | ||
| F95 | Code | Acorn ARM code | Acorn | |
| F9D | DiscCD | Acorn Access shared CD | Acorn | |
| F9E | DiscDP | Acorn Access shared protected disc | Acorn | |
| F9F | DiscD | Acorn Access shared disc | Acorn | |
| FA2 | HomeWrks | Document | ||
| FA8 | EasyData | Database | ||
| FAA | UtlLabel | Labelling file | ||
| FAF | HTML | HyperText Markup Language document | ||
| FB0 | Allocate | Acorn resource allocation file | Acorn RISC OS Open Ltd | |
| FB1 | Wave | RIFF format audio | ||
| FB2 | MovieFS | Microsoft Windows Video/Apple QuickTime video | Warm Silence Software | |
| FB4 | DiscR | Acorn Access shared resources directory | Acorn | |
| FB5 | NoDisc | Acorn Access missing shared disc | Acorn | |
| FBC | PBAbacus | Acorn PocketBook/Psion Series III spreadsheet | Acorn, Psion | |
| FBD | PBWrite | Acorn PocketBook/Psion Series III word processor document | Acorn, Psion | |
| FBE | PBCards | Acorn PocketBook/Psion Series III database | Acorn, Psion | |
| FC0 | Link | LinkFS symbolic link | ||
| FC2 | AIFF | Audio IFF | ||
| FC3 | Patch | Acorn application patch file | Acorn | |
| FC6 | PrntDefn | Acorn !Printers printer definition file | Acorn | |
| FC8 | DOSDisc | DOS MultiFS disc image | ||
| FC9 | SunRastr | Sun raster | Sun Microsystems | |
| FCA | Squash | Single compressed file | Acorn | |
| FCC | Device | Device object within DeviceFS | Acorn | |
| FCD | HardDisc | FileCore hard disc image | Acorn | |
| FCE | Floppy | FileCore floppy disc image | Acorn | |
| FCF | Cache | Acorn FontManager font cache file | Acorn | |
| FD0 | PCEmConf | PC Emulator configuration | Acorn | |
| FD1 | BASICTxt | BASIC stored as text | Acorn | |
| FD2 | ScrDiff | Acorn file | Acorn | |
| FD3 | DebImage | Acorn DDE debuggable image | Acorn, Codemist | |
| FD4 | MIDI | MIDI | MIDI Manufacturers Association | , |
| FD5 | Pict | PICT | Apple Inc. | ,, |
| FD6 | TaskExec | Exec file within taskwindow | Acorn | |
| FD7 | TaskObey | Obey file within taskwindow | Acorn | |
| FD8 | MSDOScom | PC Emulator DOS command file | Digital Research | .com |
| FD9 | MSDOSexe | PC Emulator DOS executable file | Digital Research | .exe |
| FDA | MSDOSbat | PC Emulator DOS batch file | Digital Research | .bat |
| FDB | TextCRLF | Text using CR and LF for line ends | ||
| FDC | SoftLink | TCP/IP suite: unresolvable UNIX soft link | ||
| FDD | MasterUtl | BBC Master utility | Acorn | |
| FDE | VTSetup | TCP/IP suite: VT220 setup | Digital Equipment Corporation | |
| FDF | VTScript | TCP/IP suite: VT220 script | Digital Equipment Corporation | |
| FE0 | Accessry | Acorn Arthur desktop accessory | Acorn | |
| FE1 | Make | Acorn Makefile | Acorn | |
| FE2 | Amiga | Commodore Amiga file | Commodore International, Arxe Systems | |
| FE3 | Atari | Atari file | Atari, Arxe Systems | |
| FE4 | DOS | DOS file | Digital Research, Microsoft, Arxe Systems | |
| FE5 | EPROM | BBC Micro sideways ROM image | Acorn | |
| FE6 | UNIX Ex | Unix executable | AT&T Corporation | |
| FE7 | ViewSht | Acorn ViewSheet spreadsheet | Acornsoft | |
| FE8 | ViewPS | Acorn ViewPS "View Professional" word processor | Acornsoft | |
| FE9 | ViewWord | Acorn View word processor | Acornsoft | |
| FEA | Desktop | Desktop command file | Acorn | |
| FEB | Obey | Obey command file | Acorn | |
| FEC | Template | Window template file | Acorn | |
| FED | Palette | Palette data | Acorn | |
| FF0 | TIFF | Tagged Image File Format | Aldus Corporation | , |
| FF1 | RawData | Raw unprocessed data | Acorn | |
| FF2 | Config | Configuration | Acorn | |
| FF3 | LaserJet | HP LaserJet data file | Hewlett-Packard | |
| FF4 | Printout | Dot matrix printer data file | Acorn | |
| FF5 | PoScript | Adobe PostScript file | Adobe Systems | |
| FF6 | Font | Acorn format outline or bitmap font | Acorn | |
| FF7 | BBC font | BBC font file | Acorn | |
| FF8 | Absolute, also Acorn Image Format | Absolute application loaded at &8000 | Acorn | |
| FF9 | Sprite | Sprite or saved screen | Acorn | |
| FFA | Module | Relocatable module | Acorn | |
| FFB | BASIC | Tokenised BASIC program | Acorn | |
| FFC | Utility | Position independent code | Acorn | |
| FFD | Data | Data | Acorn | |
| FFE | Command | Command file | Acorn | |
| FFF | Text | Plain ASCII text with LF newlines | ||
| Hexadecimal type | Name | Use | Connected party | Mapped equivalent |