Markdown is a lightweight markup language that lets you format text using simple punctuation. Wrapping text in ** makes it bold; # at the start of a line creates a heading. It is widely used in README files, documentation, forums, and CMSs.

Markdown Previewer — Live Editor with Instant Preview

Write or paste Markdown and see the fully rendered output side by side in real time. Use the formatting toolbar, copy the rendered HTML, or download your .md file — no account or installation required.

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Markdown

Preview

How to Use the Markdown Previewer

Type or paste Markdown into the left editor pane.
The right preview pane updates in real time as you type.
Select text and click a toolbar button to apply formatting, or click without a selection to insert a placeholder.
Switch between Split, Editor-only, and Preview-only layouts using the buttons in the top-right.
Click Copy HTML to copy the rendered HTML, or Download .md to save the raw Markdown file.

Key Features

Live side-by-side Markdown preview powered by marked.js
Formatting toolbar: Bold, Italic, Strikethrough, H1–H3, Inline Code, Code Block, Lists, Blockquote, Link, and HR
Split, Editor-only, and Preview-only layout modes
Live word count, character count, and line count
Copy rendered HTML to clipboard with one click
Download raw Markdown as a .md file
GitHub Flavored Markdown support: tables, fenced code blocks, task lists, strikethrough
No account, no installation, fully browser-based

Use Cases

Preview GitHub README formatting before pushing

GitHub READMEs render in GitHub Flavored Markdown. Paste your README.md content here to see exactly how headings, code blocks, tables, and task lists will appear on GitHub — without committing and pushing just to check formatting.

Write blog posts in Markdown and export clean HTML

Many CMS platforms accept raw HTML. Write your article in Markdown for speed and readability, then use Copy HTML to extract clean, semantic HTML ready to paste directly into WordPress, Ghost, or any HTML editor. Need to go the other way? The Markdown to HTML converter also provides a raw code view for direct embedding.

Draft and format technical documentation online

Technical documentation often lives in Markdown files on platforms like GitLab, Confluence, or Notion. Use this online Markdown editor to draft, format, and review documentation without opening a local editor, then download the .md file to commit.

Format email newsletters with Markdown then paste HTML

Writing structured emails in Markdown is faster than HTML. Compose your newsletter content here, copy the rendered HTML, and paste it into your email client or campaign builder's HTML editor for clean, formatted output without manual tagging.

Check Markdown table and code block rendering

GFM tables and fenced code blocks are notoriously sensitive to spacing and delimiter alignment. Paste your table or code block here and verify the rendered output before embedding it in your documentation or README.

FAQ's

What is Markdown?

Markdown is a lightweight markup language that lets you format text using simple punctuation. Wrapping text in ** makes it bold, and # at the start of a line creates a heading. It is widely used in README files, documentation, forums, and CMSs.

How do I use the formatting toolbar?

Select text in the editor and click a toolbar button to wrap the selection in the appropriate Markdown syntax. If no text is selected, the button inserts a placeholder at the cursor position that you can replace with your own content.

What does Copy HTML do?

Copy HTML copies the rendered HTML output of your Markdown to the clipboard. This is useful when you need to paste formatted content into an HTML editor, email client, or CMS that accepts raw HTML input.

How do I download my Markdown file?

Click Download .md to save the raw Markdown text as a .md file to your device. You can open this in any Markdown editor or commit it directly to a repository.

Does this support GitHub Flavored Markdown?

Yes. The previewer uses the marked.js library which supports GitHub Flavored Markdown including tables, fenced code blocks, task lists, and strikethrough text.

Does my Markdown content get saved anywhere?

No. All rendering happens in your browser with marked.js. Nothing you type is sent to any server. Download the .md file if you want to preserve your work between sessions.

What Markdown syntax is supported?

The previewer supports headings (#–######), bold (**), italic (*), strikethrough (~~), inline code (`), fenced code blocks (```), unordered and ordered lists, blockquotes (>), links, images, horizontal rules (---), and GFM tables. Task lists with [ ] and [x] are also supported.

Can I switch to a full-screen editor or preview?

Yes. Use the Edit layout button to expand the editor to full width, or the Preview button for a full-width rendered view. Switch back to Split at any time using the layout buttons in the top-right corner.

Related Tools

Toolaroid's Markdown previewer is built for developers, technical writers, and content creators who work with Markdown daily. Whether you are drafting a GitHub README, writing documentation, composing a blog post, or preparing newsletter copy, this free online Markdown editor gives you instant visual feedback without leaving your browser. The formatting toolbar removes the need to memorise syntax, and the Copy HTML export makes it easy to move content into any platform that accepts HTML input. No signup, no account, and nothing sent to a server — your content stays entirely in your browser.