markdownlint

Health v2 · maintenance only

Flags: no_releases

Adoption not part of the score

6304 stars · 945 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded

markdownlint is a Node.js static analysis library that checks Markdown/CommonMark files against a configurable library of style rules, supporting GFM syntax like tables, footnotes, and math. It powers a VS Code extension, CLI tools (markdownlint-cli2), and a GitHub Action for linting Markdown in editors and CI pipelines.

Use cases

• lint markdown files for style consistency
• enforce markdown style rules in a project
• check commonmark files for formatting issues
• lint markdown in vs code
• add markdown linting to ci pipeline
• standardize documentation formatting across a repo

When to choose

• you need programmatic or editor-integrated Markdown linting in a Node.js ecosystem
• you want CommonMark-compliant checks with GFM extension support
• you need consistent Markdown style enforcement across editors, CLI, and CI

When to avoid

• you lint Markdown in a Ruby project and prefer the mdl gem
• you need a formatter that rewrites files rather than reporting issues
• your project uses non-CommonMark Markdown dialects unsupported by micromark

Facets

library · maturity stable

linter parser developer-tools documentation developer-tools text-editors editor-plugin cross-platform markdown commonmark static-analysis style-checking vscode-extension linting nodejs

Member repositories

For agents

markdown · JSON · MCP: product_card(name="DavidAnson/markdownlint")