mdn/content

★ 10,746MarkdownAudience · developerComplexity · 1/5Setup · easy

Mindmap

mindmap
  root((MDN Content))
    What it is
      Web docs source
      45000 articles
      Open source
    Topics covered
      HTML CSS JS
      Browser APIs
      HTTP reference
    Who contributes
      Web developers
      Technical writers
      Beginners welcome
    Setup
      Node.js required
      npm start preview
      GitHub pull requests

mindmap root((MDN Content)) What it is Web docs source 45000 articles Open source Topics covered HTML CSS JS Browser APIs HTTP reference Who contributes Web developers Technical writers Beginners welcome Setup Node.js required npm start preview GitHub pull requests

Click or tap to explore — scroll the page freely

Things people build with this

USE CASE 1

Fix a mistake in an MDN documentation page by editing a Markdown file and submitting a pull request.

USE CASE 2

Add missing examples or explanations to a web API reference page without needing programming skills.

USE CASE 3

Run a local preview of MDN docs to review your edits in a browser before submitting.

Tech stack

MarkdownNode.jsnpm

Getting it running

Difficulty · easy Time to first run · 30min

Requires Node.js, run npm install then npm start to preview docs locally.

In plain English

This is the source repository for MDN Web Docs, the reference website that web developers use to look up how HTML, CSS, JavaScript, HTTP, and browser APIs work. Every article, tutorial, and reference page on developer.mozilla.org is stored here as a Markdown file, and changes go through the normal GitHub pull request process. MDN has been running since 2005. In that time, roughly 45,000 contributors have written and maintained more than 45,000 documents covering the full range of web technologies. The site serves both beginners learning web development for the first time and experienced developers checking the exact syntax or behavior of a specific API. Because it is open-source and community-maintained, anyone can fix a mistake or add missing information by filing an issue or submitting a pull request. The main repository covers documentation in English. Translation into other languages is handled by a separate effort, with over 35 volunteers coordinating localized versions in Chinese, French, Japanese, Korean, Portuguese, Russian, and Spanish. If you want to run a local preview of the docs site, you need Node.js installed. After cloning the repository and running npm install followed by npm start, a development server starts at localhost and shows a live preview that updates as you edit files. Contributing to MDN does not require programming knowledge. Writing, editing, improving examples, and correcting technical errors are all valued contributions. The CONTRIBUTING.md file in the repository explains the process for getting started, and the project follows Mozilla's community participation guidelines for how contributors interact with each other.

Copy-paste prompts

Prompt 1

I found an error on the MDN page for the Fetch API. Show me how to clone mdn/content, fix the Markdown, and open a pull request.

Prompt 2

How do I run a local development server for mdn/content so I can preview my documentation changes live?

Prompt 3

Write a complete code example for Array.prototype.flatMap() in MDN Markdown format, following their contribution style.

Prompt 4

What is the process for adding a brand-new beginner tutorial page to MDN Web Docs from scratch?

Open on GitHub → Explain another repo

← mdn on gitmyhub — every repo by this author, as a profile.

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