File Types

An ISO standard (ISO 14306) 3D data format developed by Siemens for visualization and data sharing of complex CAD assemblies.

Configuration file for Jest, the most popular JavaScript testing framework. Defines test patterns, coverage settings, and module resolution.

A modern template engine for Python inspired by Django templates. Jinja2 is the default templating engine for Flask, Ansible, and many other Python frameworks.

A data templating language extending JSON with variables, conditionals, loops, and functions. Used to generate JSON/YAML configuration files.

An interactive computing document containing code, outputs, visualizations, and markdown text. Standard in data science, ML research, and scientific computing.

Keyhole Markup Language: an XML-based format for geographic annotation and visualization in Google Earth and other GIS applications.

Compressed KML: a ZIP archive containing a KML file and its referenced resources (images, models) for portable geographic data sharing.

Apple Keynote Presentation: the native presentation format for Apple's Keynote application. Known for polished animations and cinematic transitions.

YAML configuration files defining Kubernetes resources (pods, services, deployments, configmaps) for container orchestration at scale.

LiDAR point cloud formats: LAS is the standard binary format for aerial LiDAR data; LAZ is its compressed variant. Used in surveying, forestry, and terrain modeling.

Leaner Style Sheets: a CSS preprocessor with variables, mixins, and functions. It extends CSS with dynamic behavior while remaining backward-compatible.

Static Library (Windows): a collection of compiled object files linked directly into an executable at compile time, as opposed to dynamic linking with DLLs.

LLVM Intermediate Representation: the low-level, typed intermediate language used by the LLVM compiler infrastructure. Used as a compilation target by many language front-ends.

Lightning Memory-Mapped Database: a high-performance embedded key-value store using memory-mapped files. Used in OpenLDAP and machine learning frameworks.

Lock File: used to prevent concurrent access to a resource or to pin exact dependency versions (package-lock.json, Gemfile.lock, composer.lock).

Log File: a text file recording events, errors, and diagnostic information generated by software, servers, or operating systems.

Lyric File: a simple text format for synchronized song lyrics. Each line is timestamped for karaoke-style display in music players.

An extremely fast lossless compression algorithm focusing on compression and decompression speed rather than ratio. Used in Linux kernel, ZFS, and real-time applications.

Lempel-Ziv-Markov chain Algorithm: a compression algorithm providing high compression ratios. It is the core algorithm used in 7z and XZ formats.

Lempel-Ziv-Oberhumer: a data compression algorithm focused on decompression speed. Used in the Linux kernel, OpenVPN, and embedded systems.