File Types

Embedded OpenType: a compact font format designed by Microsoft for embedded fonts on web pages. Now largely obsolete, replaced by WOFF/WOFF2.

Encapsulated PostScript: a PostScript-based vector graphics file format used in professional print workflows. It can contain both vector and bitmap data.

Electronic Publication: an open e-book standard by the IDPF/W3C. It uses XHTML, CSS, and a ZIP container to create reflowable digital books compatible with most e-readers.

Embedded Ruby: a templating system that embeds Ruby code within HTML documents. It is the default view engine in Ruby on Rails, using and tags for logic and output.

Electronic Software Download: a compressed and encrypted WIM file format used by Microsoft for distributing Windows updates and installation images.

Configuration file for ESLint, a JavaScript/TypeScript linting tool. Defines code style rules, plugins, and parser options for static code analysis.

Executable File: the standard format for executable programs on Microsoft Windows using the Portable Executable (PE) format.

A high dynamic range (HDR) image format developed by Industrial Light & Magic. Standard in VFX and film production for storing high-precision color data.

A file format for defining coding styles (indentation, encoding, line endings) that is recognized by most code editors and IDEs.

Source code for Elm, a functional language that compiles to JavaScript for building web front-ends. Known for its "no runtime exceptions" guarantee.

Flash MP4 Video: an Adobe Flash-compatible video container based on the ISO base media file format, used before the demise of Flash.

Filmbox: a proprietary format by Autodesk for 3D animation, modeling, and game development. It supports geometry, materials, textures, animations, and skeletal rigs.

Firebird Database: the file format for Firebird, an open-source relational database forked from Borland InterBase.

Flexible Image Transport System: the standard file format in astronomy for storing images, spectra, and tabular data. Used by NASA, ESA, and observatories worldwide.

Free Lossless Audio Codec: an open-source lossless audio compression format. It reduces file size by 50-70% without any loss of audio quality, making it popular among audiophiles.

Free Lossless Image Format: an experimental lossless image format claiming better compression than PNG, WebP lossless, and JPEG 2000 lossless.

Flash Video: a container format formerly used to deliver video over the internet via Adobe Flash Player. Largely obsolete since HTML5 video replaced Flash.

A small icon associated with a website, displayed in browser tabs, bookmarks, and address bars. Originally a 16x16 .ico file, modern favicons support PNG, SVG, and multiple sizes for different devices...

A Lisp that compiles to Lua, bringing functional programming and macros to the Lua ecosystem while maintaining full Lua interoperability.

Figma Design File: the file format for Figma, a collaborative browser-based UI design tool. Files are stored in the cloud with local .fig export.