Content as structured data

We compile content to syntax trees and syntax trees to content.
We also provide hundreds of packages to work on the trees in between.
You can build on the unified collective to make all kinds of interesting things.


We provide the building blocks: from tiny, focussed, modular utilities to plugins that combine them to perform bigger tasks. And much, much more. You can build on unified, mixing and matching building blocks together, to make all kinds of interesting new things.

  1. Prettier

    Uses unified to format Markdown

  2. Gatsby

    Uses unified to pull content into GraphQL

  3. Write Music

    Uses unified to visualize sentence length

  4. Node.js

    Uses unified to check and build their docs

  5. alex

    Uses unified to catch insensitive, inconsiderate writing

  6. See 23 other cases


We provide the interface: for parsing, inspecting, transforming, and serializing content. You work on structured data. Learn how to plug building blocks together, write your own, and make things with unified.

  1. Intro to unified

    Guide that summarises the what and why of unified

    1. guide
    2. welcome
    3. introduction
  2. Use unified

    Guide that delves into transforming Markdown to HTML

    1. guide
    2. use
    3. transform
    4. remark
    5. rehype
  3. Tree traversal

    How to do tree traversal (also known as walking or visiting a tree)

    1. recipe
    2. unist
    3. tree
    4. traverse
    5. walk
    6. visit
  4. Find a node

    How to find a node in any unist syntax tree

    1. recipe
    2. node
    3. tree
    4. traverse
    5. walk
    6. find
  5. Remove a node

    How to remove nodes in any unist tree

    1. recipe
    2. node
    3. tree
    4. remove
    5. delete
    6. traverse
    7. walk
  6. See 4 other articles


The ever growing ecosystem that the unified collective provides today consists of 267 open source projects, with a combined 21k stars on GitHub. In the last 30 days, the 410 packages maintained in those projects were downloaded 290m times from npm. Much of this is maintained by our teams, yet others are provided by the community.

  1. remark-lint

    remark plugin to lint Markdown code style
    1. 72%
    2. 173k
    3. 2.24 kB
  2. remark-toc

    remark plugin to generate a Table of Contents (TOC)
    1. 72%
    2. 213k
    3. 3.4 kB
  3. @mdx-js/vue-loader

    Vue loader for MDX
    1. 72%
    2. 3k
    3. 340 kB
  4. remark-mdx

    Support import, export, and JSX in markdown
    1. 78%
    2. 3m
    3. 229 kB
  5. unist-util-modify-children

    unist utility to modify direct children of a parent
    1. 73%
    2. 943k
    3. 418 B
  6. See 410 packages and 267 projects


Maintaining the collective, developing new projects, keeping everything fast and secure, and helping users, is a lot of work. Thankfully, we are backed financially by our sponsors. This allows us to spend more time maintaining our projects and developing new ones. To support our efforts financially, sponsor or back us on OpenCollective.

  1. GatsbyJS

  2. Vercel

    Develop. Preview. Ship. – Creators of nextjs.org, the Jamstack framework.

  3. Netlify

    Netlify is everything you need to build fast, modern websites: continuous deployment, serverless functions, and so much more.

  4. Holloway

    We publish Guides for navigating life’s complexities.

  5. ThemeIsle

  6. See 29 other sponsors