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Your document stays on this device and autosaves as you go.

Free Online Markdown Editor & Viewer

Easy Markdown Editor is a free browser-based tool for writing, previewing, and exporting Markdown. Paste a document or start typing—no signup, no install, and your files stay on your device.

What is Markdown?

Markdown is a lightweight markup language for formatting plain text with simple syntax. It’s widely used for README files, documentation, blog posts, and notes. An online editor with live preview helps you catch formatting issues as you write, without switching to a separate viewer.

What you can do here

The editor supports GitHub Flavored Markdown (GFM), syntax-highlighted code blocks, tables, task lists, and Mermaid diagrams (flowcharts, sequence diagrams, and more). You can switch between the rendered document and the raw Markdown source, and use light or dark theme.

When you’re ready to share, copy or download HTML in one click. The HTML export keeps your formatting, highlighted code, and Mermaid diagrams as embedded SVGs so the file works offline in any browser.

Privacy-friendly by design

Documents are saved in your browser’s local storage—not on our servers. That means you can return later and pick up where you left off, without creating an account. Clearing site data in your browser will remove saved documents, so export anything important.

Who it’s for

Developers use it for READMEs and docs, writers for drafts, students for notes, and anyone who wants a quick Markdown preview without installing an app. Paste existing Markdown to see it rendered immediately, or build a document from scratch.

Get started

Scroll up to the editor, paste your Markdown, or start typing. Export to Markdown or HTML whenever you need to share or publish. No account required.

Frequently Asked Questions About Markdown

Everything you need to know about Markdown—from basics and formatting to Mermaid diagrams and HTML export.

What is Markdown?

Markdown is a lightweight markup language created by John Gruber in 2004. It uses simple, intuitive syntax to format plain text documents—asterisks for emphasis, hash symbols for headings, brackets for links, and so on. Even the raw text stays readable, unlike HTML. It's widely used for documentation, README files, blog posts, technical writing, and note-taking.

How do you use Markdown?

Write plain text and add simple formatting characters: # for headings, *asterisks* or _underscores_ for italic, **double asterisks** for bold, hyphens or numbers for lists, [text](URL) for links, and ![alt text](image-url) for images. Use backticks for inline code and triple backticks for code blocks. You can write Markdown in text editors, dedicated tools like Easy Markdown Editor, GitHub, Reddit, Discord, Slack, and many other platforms.

What is an .md file?

An .md file is a plain text file with the .md extension that contains Markdown-formatted content. You can open it in any text editor. These files are common for README files in software projects, documentation, and notes. They're portable, work well with version control, and convert easily to HTML or PDF.

How to bold in Markdown?

Wrap text with double asterisks or double underscores: **bold text** or __bold text__. Double asterisks are more common. Three asterisks (***bold and italic***) make text both bold and italic.

How to underline in Markdown?

Standard Markdown has no underline syntax, because underlines are easy to confuse with links. You can use HTML inside Markdown: <u>underlined text</u> or <ins>underlined text</ins>. Most processors support inline HTML. For emphasis on the web, bold or italic is usually clearer.

How to make a table in Markdown?

Use pipes (|) for columns and hyphens (-) for the header separator: | Header 1 | Header 2 | Header 3 | |----------|----------|----------| | Cell 1 | Cell 2 | Cell 3 | | Cell 4 | Cell 5 | Cell 6 | Align columns with colons in the separator: |:---| left, |:---:| center, |---:| right. Tables are part of GitHub Flavored Markdown and most modern Markdown tools, including this editor's live preview.

How to preview Markdown in VS Code?

Open a .md file and press Ctrl+Shift+V (Cmd+Shift+V on Mac) for a preview tab, or Ctrl+K V (Cmd+K V) for a side-by-side preview. You can also use the preview icon in the editor toolbar. VS Code updates the preview as you type and supports GitHub Flavored Markdown.

How to convert Markdown to PDF online free?

In Easy Markdown Editor, write or paste your Markdown, then use your browser’s Print dialog (Ctrl+P or Cmd+P) and choose Save as PDF. You can also download HTML from the toolbar and open that file in a browser or Google Docs to export as PDF. Command-line tools like Pandoc work if you prefer the terminal.

Does Easy Markdown Editor support Mermaid diagrams?

Yes. Put Mermaid code in a fenced code block with the mermaid language tag, and the live preview renders flowcharts, sequence diagrams, class diagrams, state diagrams, and other chart types. HTML export includes diagrams as SVGs so they still display offline.

How do I convert Markdown to HTML?

Write or paste your Markdown, then use Copy HTML or Download HTML in the toolbar. Copy HTML puts rendered HTML on your clipboard; Download HTML saves a standalone file with formatting, syntax-highlighted code, and Mermaid diagrams. No signup required—everything runs in your browser.

Can I export Markdown as a standalone HTML file?

Yes. Download HTML from the toolbar to get a complete file with readable typography, code highlighting, and Mermaid diagrams as embedded SVGs. Open it in any browser, share it, or host it as a simple page—no editor or internet needed to view it.