Free Online Markdown Viewer

View and render .md files directly in your browser — no install needed

Sometimes you need to view Markdown online without installing anything — you're on a shared machine, reviewing a colleague's file, or just want a quick look at a README. The MDViewer online viewer lets you drop any .md file into your browser and see it rendered instantly.

How It Works

  1. Open getmd.ma/viewer in any browser
  2. Drag and drop your .md file onto the page — or click Choose File
  3. Your file renders immediately with full formatting: headings, tables, code blocks, links, and images

The entire process happens in your browser. Your file is read locally by JavaScript — nothing is uploaded to a server. Your Markdown stays on your device.

What the Online Markdown Viewer Supports

  • GitHub Flavored Markdown — tables, task lists, strikethrough, fenced code blocks
  • Syntax highlighting — code blocks render with colors for 180+ languages (Python, JavaScript, Swift, SQL, and more)
  • Mermaid diagrams — flowcharts, sequence diagrams, ER diagrams render as interactive SVGs. Click to zoom and pan
  • Table of contents — a sidebar shows all headings with live scroll tracking, just like in the desktop app
  • Light and dark mode — follows your system preference automatically

When to Use an Online Markdown Viewer

  • Quick review — check how a README or doc looks before committing
  • Shared computers — you can't install apps on a work machine or library computer
  • Cross-platform — works on Windows, Linux, ChromeOS, and any device with a browser
  • Sending to non-technical people — share the link, they drop the file, done

Online Viewer vs. Other Options

  • GitHub preview — only works for files already in a repository. Can't view local files
  • Dillinger / StackEdit — full online editors. Great for writing, overkill for just viewing
  • Copy-paste into ChatGPT — works in a pinch, but strips formatting and is slow for large files
  • MDViewer online viewer — purpose-built for viewing. Drag, drop, read. No account, no editor, no distractions

Want More? Get the Desktop App

The online Markdown viewer covers viewing, but if you need editing, Git history, file tabs, or QuickLook preview in Finder, MDViewer for macOS has you covered. It's free, native, and launches instantly.

Try the Online Viewer    Download MDViewer for Mac

macOS app requires macOS 13.0 or later. Intel and Apple Silicon.

FAQ

Is the online Markdown viewer free?

Yes, completely free. No sign-up, no limits, no ads.

Is my file uploaded to a server?

No. The file is read locally by your browser using the JavaScript FileReader API. Nothing leaves your device.

Can I view Markdown online on my phone?

Yes. The viewer works on any device with a modern browser — iPhone, iPad, Android, Chromebook.

Does it support Mermaid diagrams?

Yes. Fenced code blocks with ```mermaid render as interactive diagrams with click-to-zoom.