# pluk-inc/markdown-preview

A simple Markdown viewer for reading .md files

Repository: https://github.com/pluk-inc/markdown-preview
Canonical: https://ross.abutalabs.com/products/markdown-preview
Homepage: http://markdownpreview.app
Language: Swift
License: MIT
License Family: permissive
Topics: macos, markdown
Last push: 2026-08-25T08:46:01+00:00

## Health v2 (maintenance only)
Score: 81/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 99, release rhythm 99, longevity 9
- inputs: {"age_days": 127, "days_push": 8, "days_rel": 8, "gap_med": 0.5, "n_releases_24m": 49}
- flags: young
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 2045, forks 93 (observed 2026-08-28T04:06:08.594392+00:00)

## What it is
A fast, native macOS application for reading and previewing Markdown files with a document outline, edit mode, Mermaid diagram rendering, and LaTeX math support. It integrates with Finder via Quick Look and can be set as the default handler for .md files.

## Use cases
- read markdown files on mac without raw symbols
- preview .md files from finder with spacebar
- view mermaid diagrams in markdown offline
- render latex math in markdown documents
- quickly edit markdown files with a formatting toolbar
- navigate long markdown documents via table of contents
- set a default app for opening markdown files

## When to choose
- you want a native, fast macOS alternative to Electron-based markdown viewers
- you need offline rendering of Mermaid diagrams and KaTeX math
- you want Quick Look integration for .md files in Finder
- you prefer a lightweight reader with an optional edit mode

## When to avoid
- you need a full-featured markdown IDE or heavy editing workflow
- you work on Windows or Linux
- you need collaborative or cloud-synced markdown editing
- you require plugin or theme ecosystems

## Facets
- artifact type: application
- maturity: active
- function: markdown, documentation, pdf-viewer
- domain: text-editors, documentation, developer-tools, apple-ecosystem
- platform: -
- tags: markdown-viewer, quicklook-extension, native-app, mermaid-diagrams, katex, swift, macos, desktop

## Member repositories
- pluk-inc/markdown-preview (main) score 81

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:06:08.594392+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 2026-08-30T02:58:01.843285+00:00, confidence not recorded.
  - readme: https://github.com/pluk-inc/markdown-preview (fetched 2026-08-28T04:06:08.594392+00:00, sha 43305efaccaa)
  - homepage: http://markdownpreview.app (fetched 2026-08-29T10:38:05.565685+00:00, sha 4bc8daf0aaa4)
- Data as of 2026-08-30T08:39:29.467469+00:00.