File Types

CD Audio Track: a Windows shortcut file representing audio tracks on an audio CD. It does not contain audio data but points to the CD track location.

CorelDRAW Image File: the native vector graphics format for CorelDRAW, a popular illustration and design application.

Certificate File: contains an X.509 digital certificate for SSL/TLS, code signing, or email encryption. Can be DER (binary) or PEM (Base64) encoded.

Common Gateway Interface: a standard protocol for web servers to execute programs that generate dynamic web pages. One of the earliest server-side technologies.

Computer Graphics Metafile: an ISO standard for 2D vector and raster graphics interchange in technical illustration and documentation.

Crystallographic Information File: a standard text file format for representing crystallographic data in chemistry and materials science.

Windows NT Command Script: similar to BAT but designed for the Windows NT command processor with enhanced features.

A cross-platform build system generator using CMakeLists.txt files. It generates native Makefiles, Visual Studio projects, or Ninja build files.

An extension of the COLLADA format for exchanging physics simulation data (rigid bodies, joints, constraints) between 3D applications and game engines.

A simple executable format for MS-DOS with a maximum size of ~64 KB. One of the earliest executable formats for personal computers.

Copy In/Out: a Unix archive format used in RPM packages and Linux initramfs images. It copies files into and out of archives sequentially.

Windows Control Panel Item: a DLL file that implements a Control Panel applet for system configuration (display, network, sound settings).

Canon Raw 2: Canon's proprietary RAW image format used in DSLR and mirrorless cameras prior to the CR3 format.

Canon Raw 3: Canon's current RAW image format based on the ISO Base Media File Format (ISOBMFF), used in newer Canon cameras.

Certificate Signing Request: a message sent to a Certificate Authority to request the issuance of a digital certificate containing the public key and identity information.

Comma-Separated Values: a plain text file format that uses commas to separate values in tabular data. It is the simplest and most widely used format for data exchange between applications.

Cue Sheet: a metadata file describing the track layout of a CD or disc image, specifying positions, gaps, and indexes.

A data constraint language for validating and defining configuration data. It unifies schema and data definition with validation.

An extremely fast data interchange format and RPC system. Designed by the creator of Protocol Buffers v2 with zero-copy encoding and type-safe interfaces.

The manifest file for Rust projects, defining package metadata, dependencies, build configuration, and features for the Cargo build system.