mdn

The official source for MDN Web Docs content. Home to over 14,000 pages of documentation about HTML, CSS, JS, HTTP, Web APIs, and more.

GitHub repo for the MDN Learning Area.

Browser compatibility data for Web technologies as displayed on MDN

Example Firefox add-ons created using the WebExtensions API

Code examples that accompany various MDN DOM and Web API documentation pages

A series of web components examples, related to the MDN web components documentation at https://developer.mozilla.org/en-US/docs/Web/Web_Components.

7 community-maintained translations of MDN Web Docs in ES, FR, JA, KO, PT-BR, RU, and ZH, to learn and contribute in your native language.

The project that powers MDN.

Local Library website written in Django; example for the MDN server-side development Django module: https://developer.mozilla.org/en-US/docs/Learn/Server-side/Django.

Code examples that accompany the MDN Web Docs pages relating to Web Audio.

Local Library website written in NodeJS/Express; example for the MDN server-side development NodeJS module: https://developer.mozilla.org/en-US/docs/Learn/Server-side/Express_Nodejs.

Code examples that accompany the MDN WebGL documentation

This repository contains general data for Web technologies

(Deprecated) Home of the MDN live code editor interactive examples

Code examples that accompany the MDN CSS documentation

A repository of Fetch examples. See https://developer.mozilla.org/en-US/docs/Web/API/Fetch_API for the corresponding documentation.

MDN front-end developer curriculum

A simple one page website created to help complete beginners learn HTML basics.

A single-page website created to help complete beginners learn HTML with JS added to help beginners learn JavaScript. Supports https://developer.mozilla.org/en-US/Learn/Getting_started_with_the_web/JavaScript_basics

Sample todo app built with the React/ReactDOM framework.

Basic blog site written in Django (part of MDN Django module assessment).

MDN's frontend since late 2025, built with Web Components, Lit, and SSR for a fast, clean documentation experience. Fred = /fr(ont)e(n)d/.

Using the <canvas> element to do software rendering of a 3D environment with ray-casting

A place to provide feedback and suggestions for MDN Web Docs

The base Sass for Mozilla Developer based projects and products

(Deprecated) Jenkins ansible playbook

MDN Web Docs public organization profile

A scalable set of icons for use across Mozilla Developer websites

MDN Web Docs Front-End style guide

A place for agendas and minutes from regular MDN community meetings