CPC file extensions
This list is a collection of file-extensions used on the Amstrad/Schneider CPC and CPC Plus computer range. It's not a collection of file-extensions used by PC systems for CPC related stuff.
| Extension | Explanations | Programs that use this extenstion |
| $$$ | Temporary Amsdos file | amsdos |
| 128 | Soundtrakker 128KB music file | Soundtrakker |
| 64K | FutureOS Main-memory program | FutureOS |
| ACE | Packed Windows archive | ACE |
| ARC | CP/M, Xexor ARC File format | CP/M, Xexor ARC Format |
| ASC | ASCII text | |
| ASM | Assembler source code | ASM.COM |
| AYC | Derivate or converted YM music file | AYCplayers |
| BAK | Backup file | most CPC-DOS |
| BAS | Basic program | AMSDOS |
| BAT | Batch-File | |
| BIN | binary file | AMSDOS |
| CCP | Key definition for CP/M Plus | CP/M 3.0 |
| COM | Executable CP/M or SymbOS-SymShell program | CP/M, SymShell |
| CUT | AMX Pagemaker Clipart | AMX Pagemaker |
| DD* | Device driver for GSX (CP/M Plus) | CP/M 3.0 |
| DEU | German text | |
| ENG | English text | |
| EXE | EXE Executable file, SymbOS | SymbOS |
| Fld | Map file of a game | GSED |
| FNT | Font of AMX Pagemaker | AMX Pagemaker |
| FRA | French text | |
| GEs | Set of Graphic-elements | GSED |
| H | C header | Small C i.e. |
| HED | Header/Icon definition for FutureOS | FutureOS |
| HGB | FutureOS Wallpaper / Background Picture | FutureOS |
| HLP | Help file | CP/M and others |
| INF | AMX Pagemaker site | AMX Pagemaker |
| INS | Soundtrakker Instrument file | Soundtrakker |
| MAC | Makroassembler source code | MAC.COM |
| MAX | Maxam Source Code | Maxam |
| MDL | Digitracker Module | Digitracker |
| MOD | Crown Protracker Module or Amiga MO$D File | Crown Protracker |
| MP3 | MP3 Sound file | FuturePlayer |
| OBJ | Object Code | CP/M |
| OVL | Overlay parts of WordStar o.e. | CP/M |
| PA1 | AMX Pagemaker site (part 1) | AMX Pagemaker |
| PA2 | AMX Pagemaker site (part 2) | AMX Pagemaker |
| PA3 | AMX Pagemaker site (part 3) | AMX Pagemaker |
| PA4 | AMX Pagemaker site (part 4) | AMX Pagemaker |
| PAL | OCP Art Studio Palette | The OCP Art Studio |
| PAS | (Turbo-)Pascal source code | Turbo Pascal |
| PRV | AMX Pagemaker site (Preview) | AMX Pagemaker |
| PRL | page relocatable file | see also GSX |
| RAR | Packed Windows Archive | |
| ROM | Rom-File (16K) | diff. (Pseudo-)/(EP)ROM Manager |
| PT3 | Spectrum Protracker 3 Music | SymAmp |
| SAV | SymbOS screen saver | SymbOS |
| SCR | OCP Art Studio Screen | The OCP Art Studio |
| SGX | SymbOS graphic | SymbOS |
| SID | chiptune from C64 | Geco's SID player |
| SKM | compilated STarKos Module | SymAmp |
| Skr | Set of Scripts | GSEd |
| SKS | STarKos Module | STarKos |
| SMC | Executable C Program for FutureOS | FutureOS |
| SND | Soundtrakker 64KB Music | Soundtrakker |
| Spr | Set of Sprites | FutureOS |
| ST2 | Compilated Soundtrakker 128 Module | SymAmp |
| SUB | Submit/Batch file (CP/M) | CP/M |
| SYS | GSX file (CP/M) | CP/M |
| TXT | ASCII text | |
| VID | SymbOS video | SymPlay |
| WIN | OCP Art Studio Clip | The OCP Art Studio |
| WP | Key definition for WordStar | WordStar |
| X16 | FutureOS Expansion RAM program | FutureOS |
| Extension | Explanations | Programs that use this extenstion |
| CDT | Tape image file format | Arnold,CaPriCe, JavaCPC, WinCPC, WinApe |
| CPR | CPC Plus cartridge file format | Arnold,WinApe |
| DSC | Disc image | DSK-CPC |
| DSK | Disc image | Arnold,CaPriCe, JavaCPC, SymSnap, WinCPC, WinApe,DSK-CPC |
| SNA | Machine snapshot image file format | Arnold,CaPriCe, JavaCPC, SymSnap, WinCPC, WinApe |
| TAP | Emulator tape image | Roland |
| YM | YM Music file | YM-Player and others |