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Markdown Editor

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About Markdown Editor

Live Preview

See your formatted Markdown instantly as you type. Split-pane view for editing and previewing simultaneously.

Code Highlighting

Syntax highlighting for code blocks in 180+ languages using highlight.js.

Toolbar Shortcuts

Quick formatting buttons for headings, bold, italic, links, images, code, lists, quotes, and tables.

Auto-Save

Your content is automatically saved to localStorage. Never lose your work.

Import & Export

Import .md files from your computer. Export as Markdown or styled HTML document.

100% Private

All processing happens in your browser. Your content never leaves your device.

Frequently Asked Questions

What is Markdown?
Markdown is a lightweight markup language created by John Gruber. It allows you to write formatted content using plain text syntax. It's widely used for documentation, README files, blog posts, and note-taking.
Is my content saved automatically?
Yes! Your content is automatically saved to your browser's localStorage every few seconds. When you return to this page, your content will be restored. Note that clearing browser data will delete the saved content.
What code languages are supported for syntax highlighting?
We use highlight.js which supports 180+ programming languages including JavaScript, Python, Java, C++, Ruby, Go, Rust, SQL, HTML, CSS, and many more. Just specify the language after the opening code fence (```javascript).
Can I export my document with styling?
Yes! The "Export HTML" option creates a standalone HTML file with embedded CSS styling. It will look exactly like the preview. You can open it in any browser or use it as a web page.
Is my data secure?
100% secure. All processing happens locally in your browser. Your content is never uploaded to any server. We can't see or access your documents.

Related Tools

About Markdown Editor

Write and preview Markdown online free with FreeToolBox's live Markdown Editor — type Markdown on the left and see rendered HTML output on the right in real time. Whether you're drafting a README for GitHub, writing a blog post for a static site generator, or learning Markdown syntax, our editor provides an instant live preview so you can see exactly how your formatting will look. It supports the full CommonMark specification including headings, bold, italic, lists, tables, code blocks, and blockquotes.

Your content is never sent to any server — everything stays in your browser. Export your Markdown as a .md file or copy the rendered HTML for use in any CMS. No account required, no file size limits, completely free.

Best use cases for Markdown editing

When should you use Markdown Editor vs other tools?

Use Markdown Editor when you need live preview and fast text iteration. If you need placeholder copy before writing the real content, start with Lorem Ipsum Generator. If you need to compare two documentation revisions, follow up with Diff Checker.

No-upload workflow: README drafts, internal notes, and article outlines stay in your browser while you write and preview.

Frequently Asked Questions

What Markdown syntax is supported?

Headings (#, ##, ###), **bold**, *italic*, ~~strikethrough~~, [links](url), code blocks (```), inline `code`, tables, blockquotes (>), and task lists (- [x]). Follows CommonMark and GitHub-Flavored Markdown.

Can I export my work?

Yes. Download as a .md file, or copy the rendered HTML. The editor also saves to localStorage so you don't lose work on page refresh.

Can I use this for GitHub README and documentation drafts?

Yes. That's one of the best fits. The live preview helps you catch heading structure, lists, code blocks, and tables before pushing the final Markdown into GitHub or a docs repo.

Is my text saved to any server?

No. All content is stored in your browser's localStorage and never transmitted to any server. Your documents are completely private.

Does it support syntax highlighting in code blocks?

Yes. Code blocks with a language specifier (e.g., ```javascript) are syntax-highlighted in the preview using highlight.js.

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