File Types

DSD Stream File: a file format for storing DSD (Direct Stream Digital) audio, the encoding used in Super Audio CDs (SACD). Favored by audiophiles for its high-resolution audio.

Document Type Definition: a set of markup declarations defining the structure of an XML or SGML document. Predates XML Schema.

Digital Theater Systems: a multichannel audio codec format used in cinema and home theater. It is a major competitor to Dolby Digital with higher bitrates.

Native file format for AutoCAD, used for storing 2D and 3D design data. It is the most widely used CAD format in architecture, engineering, and construction.

Drawing Exchange Format: an open CAD data file format by Autodesk for interoperability between AutoCAD and other programs.

Drawing Exchange Format: an open CAD interchange format by Autodesk. Text-based variant widely supported by laser cutters, CNC machines, and 2D CAD software.

An open-source storage layer by Databricks adding ACID transactions, schema enforcement, and time travel to Apache Parquet-based data lakes.

A programmable configuration language that is not Turing-complete, guaranteeing that configuration generation always terminates.

A video codec known for compressing long video into small files while maintaining quality. Popular in the early 2000s for video sharing.

A file format designed for scanned documents, combining image, text, and drawing layers. It achieves much higher compression than PDF for scanned content.

A YAML file defining multi-container Docker applications with services, networks, and volumes for orchestrating development and deployment environments.

A text file containing instructions for building Docker container images. It defines the base image, dependencies, configuration, and commands to create reproducible application environments.

Dynamic Library: the macOS equivalent of SO/DLL. A shared library loaded at runtime by the dynamic linker (dyld).

An ASTM standard for storing 3D point cloud data from laser scanners. It supports structured and unstructured point clouds with images and metadata.

Embedded JavaScript Templates: a simple templating language that uses plain JavaScript embedded in HTML markup. Commonly used in Node.js and Express applications.

Executable and Linkable Format: the standard binary file format for executables, shared libraries, and object files on Unix/Linux systems.

Enhanced Metafile: the 32-bit successor to WMF with improved features for vector and raster graphics on Windows platforms.

Email Message: a standard format for individual email messages based on RFC 5322, preserving headers, body, and attachments in MIME format.

Apple Mail Message: the email storage format used by Apple's Mail application, storing one message per file with metadata.

Environment File: a plain text file containing key-value pairs for environment variables. Used by frameworks like Laravel, Node.js, and Ruby on Rails to manage configuration and secrets.