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Markdown Viewers & Preview: 7 tools to compare | MarkdownList
  1. Markdown tools
  2. Viewers & Preview

Markdown viewers & preview

Read rendered Markdown and follow changes without opening a full editor.

7 tools

How to choose a Markdown viewer

Check which Markdown features render, how the tool opens local files, and whether it refreshes when files change. Search, document navigation, offline access, and platform support can matter for longer documents.

Viewers & Preview in the directory

FreeOpen source

Marko MD

A focused viewer for the Markdown that Claude writes.

Read local plans, reports, specs, and runbooks in task-specific Reading, Plan, and Interactive modes. Marko runs as a lightweight macOS or Windows app, a standalone browser file, an npm CLI and live server, or a Claude Code plugin, with no accounts, telemetry, or uploads.

Web app · Desktop app · CLI · AI agent plugin
Web · macOS · Windows · CLI

Reviewing Claude-generated plans, reports, specs, and runbooks
FreeOpen source

Tim’s Markdown Reader

A fast, minimal, offline Markdown viewer for Mac.

Read local Markdown without opening an editor. This native Swift app renders tables, code blocks, task lists, footnotes, local images, and Mermaid diagrams offline, with linked-file navigation, full-document find, and automatic reload when files change.

Desktop app
macOS

Reading local Markdown privately on Apple silicon Macs running macOS 14 or later
PaidOpen source

MarkdownObserver

Watch Markdown change as agents, editors, and scripts write it.

Preview Markdown in a native macOS app while it watches project folders for saved changes. MarkdownObserver adds workspace groups, favorite folder watches, multiple-file windows, syntax highlighting, breadcrumbs, and gutter or comparison indicators that make live document edits easy to follow.

Desktop app
macOS

Rendered readingLocal files
Following Markdown that AI agents, editors, or scripts update on disk
Free

Readdown

Double-click Markdown to read it beautifully on Mac.

Open local Markdown as a rendered, read-only document instead of raw text, or preview it directly from Finder with Quick Look. Readdown supports syntax highlighting, Mermaid diagrams, dark mode, live refresh, search, zoom, printing, and PDF export while leaving source files untouched.

Desktop app
macOS

Reading local Markdown and agent-generated plans without opening a full editor
FreeOpen source

Glow

Render Markdown in the terminal.

Read rendered Markdown in the terminal from local files, standard input, or supported remote sources. Glow offers a terminal interface for discovering Markdown in a directory, filtering the file list, and paging through documents, with configurable styles for different terminal backgrounds. It is a reader rather than an authoring editor.

CLI
macOS · Windows · Linux · CLI

Rendered readingLocal files
Reading README files and documentation from a terminal
Free

Markdown Tree

Browse long Markdown files as a collapsible tree on Android.

A free navigation-focused Android viewer that turns Markdown headings into a collapsible document tree. Markdown Tree is designed for large offline reference notes, offers lightweight editing, works without an account, and declares no data collection in its Play Store listing.

Mobile app
Android

Navigating large structured Markdown reference notes on Android
Freemium

MD Flow

Browse and read local Markdown folders on Apple devices.

A native Markdown reader for Mac, iPhone, and iPad that opens folders already on your device. Its rendered view handles tables, syntax-highlighted code, math, Mermaid diagrams, and callouts, with a table of contents for long files. The free tier covers folder browsing and previews; a one-time Pro purchase adds cross-folder content search and PDF export.

Desktop app · Mobile app
macOS · iOS

Rendered readingLocal files
Reading existing Markdown folders across Mac, iPhone, and iPad without moving files into a note app