What Is Markdown? A Complete Guide to Lightweight Markup
Learn what Markdown is, how it works, and why it has become the go-to format for documentation, notes, and web content. Includes syntax guide and practical tips.
Jun 23, 2026
Markdown to HTML
Write Markdown on the left, see the rendered HTML preview on the right in real-time.
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What Is Markdown to HTML?
Markdown to HTML conversion turns lightweight Markdown markup into clean, semantic HTML you can use directly in web pages. You write headings, lists, links, code blocks, tables, and emphasis using simple symbols, and the converter produces the corresponding <h2>, <ul>, and <table> elements for you.
It is a common step in publishing pipelines for documentation, blog posts, README files, and content management systems. With a live preview on the same screen, you can verify exactly what the output will look like and copy or download the generated HTML in seconds — no server-side processing required.
How to Use
- Write Markdown on the left panel — see the HTML preview update in real-time on the right.
- Copy the generated HTML using the Copy HTML button, or Download as an .html file.
- Click Example to load a sample Markdown document that demonstrates all supported syntax.
- Use Clear to reset and start fresh.
Tip
Supports standard Markdown: headings, bold, italic, links, images, code blocks (with syntax hint), lists, blockquotes, tables, horizontal rules, and inline code.
Markdown Syntax Reference
| Element | Markdown | HTML |
|---|---|---|
| Heading 1 | # Heading | <h1>Heading</h1> |
| Bold | **bold text** | <strong>bold text</strong> |
| Italic | *italic text* | <em>italic text</em> |
| Link | [text](url) | <a href="url">text</a> |
| Code Block | ```js ... ``` | <pre><code>...</code></pre> |
| Inline Code | `code` | <code>code</code> |
| Unordered List | - item | <ul><li>item</li></ul> |
| Ordered List | 1. item | <ol><li>item</li></ol> |
| Blockquote | > quote | <blockquote>quote</blockquote> |
| Horizontal Rule | --- | <hr> |
| Image |  | <img src="url" alt="alt"> |
| Table | \| A \| B \| | <table><tr><td>...</td></tr></table> |
Frequently Asked Questions
Does this tool support GitHub Flavored Markdown (GFM)?
This tool supports standard Markdown with common extensions including tables, fenced code blocks (with language hints), strikethrough, and task lists. It covers most GFM features.
Is my data sent to a server?
No. All Markdown parsing and HTML rendering happens 100% client-side in your browser using a custom-built JavaScript parser. Your text never leaves your machine.
Can I use this for README files or documentation?
Yes! This tool is perfect for previewing README.md files, writing documentation, creating blog post drafts, or any content that needs to be converted between Markdown and HTML.
Last updated: 17 Aug 2026