Computer file extensions - C
Updated: 07/13/2023 by Computer Hope
Below is a listing of each of the different file extensions that begin with the letter "C." If you are looking for a file extension that starts with a different letter, click the corresponding beginning letter below.
| C | |
|---|---|
| .C | C file used with the C programming language. |
| .CAB | Cabinet file used in Windows 95 and Windows 98 containing all the Windows files and drivers. How to extract files from the Windows cabinets. |
| .CAL | 1. Windows Calendar file. 2. Supercalculator4 file. 3. Supercal spreadsheet. |
| .CAM | Casio digital camera file. |
| .CAP | Trace file containing packets, or raw data, generated by packet sniffing software. |
| .CAS | Netica comma separated value text file of cases. |
| .CBL | COBOL program file. |
| .CBT | CBT (Computer-Based Training) files. |
| .CDA | CD (Compact Disc) audio player track. |
| .CDD | ConceptDraw PRO diagram file. |
| .CDR | CorelDRAW vector file. |
| .CDT | CorelDRAW template file |
| .CFB | Comptons multimedia file. |
| .CFG | A configuration file. |
| .CFL | Corel flowchart file. |
| .CFM | 1. Corel FontMaster file. 2. Cold Fusion template file. 3. Visual dBASE customer form. |
| .CGM | CAD (Computer-Aided Design) file. |
| .CHK | ScanDisk file used to backup information that ScanDisk has found to be bad, found in C root. Because the files information is corrupted or reported as bad by ScanDisk, it's perfectly fine to delete these files, providing you are currently not missing any information. Additional information about ScanDisk is on our ScanDisk page. |
| .CL | Generic LISP (LISt Processor) source code. |
| .CL3 | Easy CD Creator layout file. |
| .CL4 | Easy CD Creator layout file. |
| .CLA | Java class file. |
| .CLG | Disk catalog database. |
| .CLK | Corel R.A.V.E. animation file. |
| .CLL | Crick software clicker file. |
| .CLO | Cloe image. |
| .CLP | 1. Windows clipboard file. 2. Quattro Pro clip art. 3. Clipper 5 compiler script file. |
| .CLR | 1. WinEdit colorization word list. 2. 1st reader binary color screen image 3. PhotStyler color definition file. |
| .CLS | 1. Visual Basic class module. 2. C++ class definition file. |
| .CMD | 1. Windows script file. 2. OS/2 command file. |
| .CMV | Corel movie file. |
| .CNT | Help file (.hlp) contents and other contents file used with other programs. |
| .CPL | Windows Control Panel icons. |
| .CNE | A configuration file that builds COM files. |
| .CNF | A configuration file. |
| .CNV | ACD Systems Canvas 6, 7, and 8 files. |
| .COB | COBOL (Common Business Oriented Language) source code file. |
| .COD | FORTRAN (Formula Translation) compiler program code. |
| .COM | Executable file. |
| .CPE | Fax cover page file. |
| .CPI | 1. Code Page information file. 2. Microsoft Windows applet Control Panel file. |
| .CPP | C++ source code file. |
| .CPT | 1. Compact Pro compressed file extracted and used with various compression utilities. 2. Corel Photo-Paint file. |
| .CR2 | Canon RAW format file. |
| .CRD | Windows card file. |
| .CRT | Microsoft security certificate. |
| .CRW | Canon RAW format file. |
| .CSI | Source code file for a Contentserv project. |
| .CSV | 1. Comma-separated values file used primary with databases and spreadsheets (e.g., Microsoft Excel and OpenOffice Calc). 2. Image file used with CompuShow. |
| .CUE | Description of a CD image file. Often used with .BIN file. |
| .CUR | Windows mouse cursor. |
| .CV5 | ACD Systems Canvas 5 file. |
| .CVI | ACD Systems image format file. |
| .CVS | ACD Systems Canvas drawing file. |
| .CVX | ACD Systems Canvas 9 file. |
| .CXX | 1. C++ program file. 2. Zortech C++ file. |