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. Support tables in remark

    How to support GitHub-style tables in remark (or react-markdown)

    1. recipe
    2. remark
    3. plugin
    4. gfm
    5. github
    6. table
  6. See 10 other articles


The ever growing ecosystem that the unified collective provides today consists of 367 open source projects, with a combined 57k stars on GitHub. In comparison, the code that the collective maintains is about 192 Moby Dicks or 76 Linuxes. In the last 30 days, the 546 packages maintained in those projects were downloaded 1b times from npm. Much of this is maintained by our teams, yet others are provided by the community.

  1. @mdx-js/preact

    Preact context for MDX
    1. 79%
    2. 29k
    3. 356 B
  2. micromark-factory-destination

    micromark factory to parse destinations (found in resources, definitions)
    1. 79%
    2. 13m
    3. 634 B
  3. micromark-util-subtokenize

    micromark utility to tokenize subtokens
    1. 79%
    2. 13m
    3. 944 B
  4. micromark-extension-gfm

    micromark extension to support GFM (GitHub Flavored Markdown)
    1. 75%
    2. 9m
    3. 6.97 kB
  5. mdast-util-from-markdown

    mdast utility to parse markdown
    1. 80%
    2. 23m
    3. 26.4 kB
  6. See 546 packages and 367 projects


Maintaining the collective, developing new projects, keeping everything fast and secure, and helping users, is a lot of work. In total, we’ve closed 5k issues/PRs while 177 are currently open (3%). In the last 30 days, we’ve cut 10 new releases.

  1. jaywcjlove/rehype-video@2.0.2·

  2. jaywcjlove/rehype-ignore@2.0.2·

  3. jaywcjlove/rehype-attr@3.0.3·

    Buy me a coffee npm bundle size

    Documentation v3.0.3: https://raw.githack.com/jaywcjlove/rehype-attr/f7927e5/index.html
    Comparing Changes: https://github.com/jaywcjlove/rehype-attr/compare/v3.0.2...v3.0.3

    npm i rehype-attr@3.0.3
  4. Explore recent releases


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. Vercel

    Develop. Preview. Ship. – Creators of nextjs.org

  2. GatsbyJS

  3. Motif

    When content meets code, magic happens ✨

  4. HashiCorp

  5. GitBook

  6. See 42 other sponsors