MD Viewer is a free online Markdown viewer and markdown editor that lets you open, preview, and edit .md and .markdown files directly in your browser, without any installation. It supports GitHub Flavored Markdown (GFM), syntax highlighting for 190+ languages, folder navigation, share links, and dark mode.

How do I view a Markdown file online?

Click Open File to pick a .md file, or Open Folder to browse an entire directory. You can also drag and drop a .md or .markdown file directly onto the page. Your Markdown is rendered instantly with full GitHub Flavored Markdown support.

Is this Markdown viewer free?

Yes, MD Viewer is completely free to use. Everything runs in your browser and your files remain private by default.

Which Markdown flavors and features are supported?

MD Viewer supports CommonMark and GitHub Flavored Markdown (GFM): tables, task lists, fenced code blocks with syntax highlighting, strikethrough, autolinks, and all standard Markdown elements including headings, bold, italic, links, images, and blockquotes.

Does MD Viewer support code syntax highlighting?

Yes, MD Viewer uses highlight.js to render fenced code blocks with syntax highlighting for over 190 programming languages, including JavaScript, Python, TypeScript, Rust, Go, and more.

Can I view multiple Markdown files from a folder?

Yes. Click Open Folder to load an entire directory. MD Viewer builds a file tree in the sidebar so you can navigate between all .md files in the folder and its subdirectories.

Can I edit Markdown files in MD Viewer?

Yes. MD Viewer includes an online markdown editor with live preview, so you can switch from viewing to editing without leaving the app.

Can I share a Markdown document privately?

Yes. You can generate a private share link for a document snapshot when you want to publish or send a read-only version.

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Free Online Markdown Viewer

Open, preview, and edit Markdown files instantly in your browser. Use MD Viewer as a free markdown viewer online or switch to editor mode when you need to write and save a document.

100% Free to Use No registration needed. No sign-up. Start instantly in your browser.

Drag & drop a folder or .md file, or use the buttons above

What is MD Viewer?

MD Viewer is a free online Markdown viewer and markdown editor. Open any .md or .markdown file from your computer and see it rendered with full GitHub Flavored Markdown (GFM) support — including tables, task lists, fenced code blocks with syntax highlighting for 190+ languages, and a browser editor for quick updates.

Key features

Open single .md files or entire folders with a file tree navigator
GitHub Flavored Markdown (GFM) rendering — tables, task lists, strikethrough
Syntax highlighting for 190+ programming languages via highlight.js
Document outline panel for fast in-page navigation
Dark and light theme toggle
Drag & drop support for files and folders
Local-first viewing, with optional share links when you choose to publish a snapshot

Helpful resources

Markdown blog and tutorials for practical guides on viewing and editing.
How to view Markdown files online.
How to edit Markdown files online.
Markdown reference library for syntax, standards, and tools.

Frequently asked questions

How do I view a Markdown file online?: Click Open File to pick a .md file, or Open Folder to browse a whole directory. You can also drag and drop files directly onto the page.
Is this Markdown viewer free?: Yes, MD Viewer is completely free. Everything runs in your browser — no files are uploaded to any server, so your content stays 100% private.
Which Markdown flavors are supported?: MD Viewer supports CommonMark and GitHub Flavored Markdown (GFM): tables, task lists, fenced code blocks, strikethrough, and autolinks, plus all standard elements.
Can I open an entire folder of Markdown files?: Yes. Click Open Folder to load a directory. MD Viewer builds a file tree in the sidebar so you can navigate between all .md files and subdirectories.
Can I edit Markdown files in MD Viewer?: Yes. Switch to editor mode to write or update Markdown with live preview, then save or export the file when you are done.
Can I share a Markdown document privately?: Yes. When you want to publish a read-only snapshot, MD Viewer can generate a private share link for the current document.
Does it work offline?: Once the page is loaded, Markdown rendering is fully local. No internet connection is needed to process your files.