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. See 26 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. See 6 other articles


The ever growing ecosystem that the unified collective provides today consists of 243 open source projects, with a combined 19k stars on GitHub. In the last 30 days, the 379 packages maintained in those projects were downloaded 180m times from npm. Much of this is maintained by our teams, yet others are provided by the community.

  1. unist-util-remove-position

    Remove positions from a unist tree
    1. 78%
    2. 8m
    3. 779 B
  2. to-vfile

    Create a vfile from a file-path
    1. 74%
    2. 405k
    3. 1.47 kB
  3. rehype-parse

    HTML parser for rehype
    1. 75%
    2. 2m
    3. 57.9 kB
  4. rehype-stringify

    HTML compiler for rehype
    1. 72%
    2. 151k
    3. 11.8 kB
  5. unist-util-is

    Utility to check if a node passes a test
    1. 80%
    2. 9m
    3. 555 B
  6. See 379 packages and 243 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. ZEIT

    Our mission is to make cloud computing accessible to everyone

  2. GatsbyJS

  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. Frontend Masters

    ⚡️ In-Depth JavaScript, Node.js & Front-End Engineering Courses

  6. See 21 other sponsors