Convertisseur Markdown vers HTML

Convertissez du Markdown en HTML avec aperçu en direct. Parfait pour articles de blog, documentation et fichiers README.

What is Markdown?

Markdown is a lightweight markup language created by John Gruber in 2004. It uses plain text formatting syntax that can be easily converted to HTML and other formats. Markdown has become the de facto standard for documentation, README files, blog posts, and technical writing because it's easy to write, easy to read in plain text form, and converts beautifully to HTML. Popular platforms like GitHub, Stack Overflow, Reddit, and countless content management systems support Markdown. Our converter transforms your Markdown text into clean, standards-compliant HTML with a live preview, all while processing everything client-side to ensure your content remains completely private.

How to Use This Free Markdown to HTML Converter

Using our Markdown converter is simple: paste or type your Markdown content into the input field and click "Convert to HTML" to instantly transform it into clean HTML code. You can view the raw HTML by clicking the "HTML Code" tab or see how it will look when rendered by clicking the "Preview" tab. The preview shows exactly how your Markdown will appear on a webpage with proper styling for headings, lists, code blocks, and more. All conversion happens instantly in your browser using pure JavaScript, ensuring your content never leaves your device. Perfect for bloggers, technical writers, developers, and anyone who works with Markdown documentation.

Supported Markdown Syntax

Headers:

# H1
## H2
### H3
#### H4
##### H5
###### H6

Emphasis:

*italic* or _italic_
**bold** or __bold__
***bold italic***
~~strikethrough~~

Lists:

- Unordered item
* Another item
+ Yet another

1. Ordered item
2. Second item
3. Third item

Links and Images:

[Link text](https://example.com)
![Alt text](image.jpg)

Code:

`inline code`

```
code block
multi-line
```

Blockquotes and Horizontal Rules:

> This is a blockquote
> Multiple lines

---
Horizontal rule

Common Use Cases

  • Blog Post Conversion: Convert Markdown blog drafts to HTML for publishing
  • README Files: Transform GitHub README.md files into HTML for websites
  • Documentation: Convert technical documentation from Markdown to HTML
  • Email Content: Create HTML email content from Markdown drafts
  • CMS Migration: Move content from Markdown-based systems to HTML-based ones
  • Static Sites: Generate HTML pages from Markdown source files
  • Comment Systems: Convert user Markdown comments to safe HTML
  • Note Taking: Transform Markdown notes into formatted HTML documents

Why Use Markdown?

  • Easy to Write: Simpler syntax than HTML with fewer characters to type
  • Readable: Markdown files are readable even in plain text form
  • Portable: Plain text format works everywhere, no proprietary formats
  • Version Control Friendly: Text-based format works perfectly with Git
  • Fast Typing: Focus on content without worrying about HTML tags
  • Widely Supported: Used by GitHub, Stack Overflow, Reddit, and many CMSs
  • Future-Proof: Plain text files will always be accessible

Why Use Our Markdown Converter?

  • 100% Free: No registration, unlimited conversions, completely free forever
  • Privacy Protected: All conversion happens in your browser - your content never leaves your device
  • Instant Conversion: Real-time transformation with no server delays
  • Live Preview: See exactly how your HTML will look when rendered
  • Clean HTML: Generates standards-compliant, semantic HTML5
  • Dual View: Switch between HTML code and visual preview
  • No File Size Limits: Convert documents of any length
  • Mobile Compatible: Works perfectly on all devices

Markdown Syntax Tips

  • Leave blank lines between paragraphs for proper spacing
  • Use consistent indentation (2 or 4 spaces) for nested lists
  • Add a space after # for headers: `# Title` not `#Title`
  • Escape special characters with backslash: `\*not italic\*`
  • Use three backticks (```) for multi-line code blocks
  • End lines with two spaces for hard line breaks

Frequently Asked Questions

Is the generated HTML safe to use?
Yes, the converter generates clean, standards-compliant HTML. However, if you're displaying user-generated content, you should still sanitize the HTML server-side to prevent XSS attacks.

Can I customize the HTML output?
The tool generates semantic HTML5. You can style it with your own CSS by targeting the standard HTML elements (h1, p, ul, code, etc.) that Markdown produces.

Does it support GitHub Flavored Markdown (GFM)?
Our converter supports the most common Markdown syntax including headers, emphasis, lists, links, images, code blocks, and blockquotes. Some extended GFM features like tables and task lists are not currently supported.

Will converting preserve my formatting?
Yes, all Markdown formatting is preserved and converted to equivalent HTML. Headers become h1-h6 tags, bold becomes strong tags, italic becomes em tags, etc.

Can I convert HTML back to Markdown?
This tool converts Markdown to HTML only. For HTML to Markdown conversion, you would need a different tool as that's a more complex reverse process.

What's the difference between the code view and preview?
The code view shows the raw HTML output that you can copy and use in your projects. The preview shows how that HTML will look when rendered in a browser with basic styling applied.