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Markdown Editor — Free Online Tool

Write Markdown with live HTML preview

Write Markdown with real-time HTML preview. Export to HTML, copy rendered text, or save as Markdown file.

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Free Markdown editor with live HTML preview

Toololis Markdown Editor renders GitHub Flavored Markdown in real-time. Write on the left, see rendered HTML on the right. Export to .md or .html. Works offline once loaded.

How to use this tool

  1. 1

    Write Markdown

    Type on the left. Use **bold**, *italic*, # headings, - lists, [links](url), and `code`.

  2. 2

    See HTML preview

    Right side renders live as you type. No refresh needed.

  3. 3

    Export

    Copy the rendered HTML, copy the Markdown source, or download as .md / .html file.

Markdown quick reference

# Heading
→ H1
## Heading
→ H2
**bold**
→ bold
*italic*
→ italic
[link](url)
→ clickable link
`code`
→ inline code
- item
→ bullet list
1. item
→ numbered list
> quote
→ blockquote

Frequently Asked Questions

What Markdown flavor?
We use marked.js which implements CommonMark + GitHub Flavored Markdown (tables, task lists, strikethrough). Compatible with GitHub, Discord, Reddit.
Can I paste Markdown from GitHub?
Yes, almost any Markdown works. GFM features (tables, code blocks with syntax, task lists) render correctly.
Is the content saved?
No. Everything runs in your browser. Close the tab = content is gone. For autosaving to localStorage, tell us.
Can I use HTML in Markdown?
Yes — Markdown allows raw HTML. But for security, we sanitize common XSS vectors (no <script> tags execute).
Does it support LaTeX/math?
Not in the current version. For math formulas, use KaTeX or MathJax separately and paste rendered output.
Can I import a .md file?
Click "Open file" to load any .md file from your device. The content populates the editor.

Key Takeaways

  • Markdown Editor is a free, browser-based developer tool — write markdown with live html preview.
  • No signup, no downloads, no file uploads — your data stays on your device.
  • Works on desktop, tablet, and mobile. Install as a PWA for offline access.

How to Use Markdown Editor

  1. Open the tool: Launch Markdown Editor on Toololis — no account or download needed.
  2. Enter your data: Paste text, enter values, or select a file directly in your browser.
  3. Get instant results: Everything is processed locally — results appear immediately.
  4. Copy or download: Save your output or share it. Bookmark for quick access next time.

Markdown Editor — Quick Facts

Price
Free — no limits, no watermarks, no paywalls
Privacy
100% browser-based — no data is sent to any server
Platform
Any modern browser on desktop, tablet, or mobile
Category
Developer Tools on Toololis
Offline
Works offline after first visit (Progressive Web App)
FeatureDetails
ToolMarkdown Editor
CategoryDeveloper
Signup RequiredNo
File UploadNone — processed in browser
Mobile SupportFully responsive
CostFree forever

Why Use Markdown Editor?

You should try Markdown Editor for a quick, private way to write markdown with live html preview. All processing happens in your browser. Your files and data never leave your device. According to web.dev, client-side processing is the gold standard for privacy.

On the other hand, dedicated APIs or desktop tools suit batch processing better. They also handle server-side automation. For everyday tasks, browser tools offer the best speed, privacy, and convenience.

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100% Privacy. This tool runs entirely in your browser. Your data is never uploaded to any server.