# markdown-it/markdown-it

Markdown parser, done right. 100% CommonMark support, extensions, syntax plugins & high speed

Repository: https://github.com/markdown-it/markdown-it
Canonical: https://ross.abutalabs.com/products/markdown-it
Homepage: https://markdown-it.github.io
Language: TypeScript
License: MIT
License Family: permissive
Topics: commonmark, markdown, javascript
Last push: 2026-08-26T11:24:05+00:00

## Health v2 (maintenance only)
Score: 77/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 99, release rhythm 35, longevity 100
- inputs: {"age_days": 4275, "days_push": 7, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 21849, forks 1846 (observed 2026-08-28T04:11:32.135124+00:00)

## What it is
markdown-it is a fast, pluggable Markdown parser for JavaScript with 100% CommonMark support plus syntax extensions like URL autolinking and typographer. Its configurable rule system allows adding or replacing syntax rules, and it has a large ecosystem of community plugins.

## Use cases
- render markdown to html in node.js
- parse markdown in the browser
- convert markdown files to html
- add custom markdown syntax extensions
- build a blog or cms with markdown content
- sanitize untrusted markdown input safely

## When to choose
- you need spec-compliant CommonMark rendering
- you want to extend or customize markdown syntax with plugins
- parsing speed matters
- you need safe-by-default rendering of user-supplied markdown

## When to avoid
- you need markdown flavors like GFM tables out of the box without plugins
- you are not working in JavaScript/TypeScript
- you need a WYSIWYG markdown editor rather than a parser

## Facets
- artifact type: library
- maturity: stable
- function: parser, markdown, plugin-system
- domain: parsers, web-development, frontend, documentation
- platform: browser, cross-platform
- tags: commonmark, markdown-parser, extensible, typescript, syntax-plugins, nodejs, javascript

## Member repositories
- markdown-it/markdown-it (main) score 77

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:11:32.135124+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-29T16:57:47.020528+00:00, confidence not recorded.
  - readme: https://github.com/markdown-it/markdown-it (fetched 2026-08-28T04:11:32.135124+00:00, sha 4be181f1920e)
  - homepage: https://markdown-it.github.io (fetched 2026-08-29T07:56:34.398847+00:00, sha bf208e513c5b)
  - registry_npm: https://registry.npmjs.org/markdown-it (fetched 2026-08-29T07:56:34.407997+00:00, sha a19a7277f998)
- Data as of 2026-08-30T08:39:29.467469+00:00.