Konverter
Markdown → HTML
The Markdown to HTML Converter renders Markdown source into clean, standards-compliant HTML. It supports CommonMark, GitHub Flavored Markdown (GFM) extensions including tables, task lists, strikethrough, and fenced code blocks with syntax highlighting. Use it to preview Markdown content, generate HTML snippets for CMS publishing, or export documentation from Markdown source.
What is Markdown?
Markdown is a lightweight markup language created by John Gruber in 2004. It allows authors to write formatted content using plain text with simple punctuation conventions: # for headings, ** for bold, * for italic, - for lists, and ``` for code blocks. Markdown was designed to be readable as plain text while being convertible to HTML. Today it is used everywhere: README files on GitHub, static site generators (Jekyll, Hugo), documentation tools (Docusaurus, MkDocs), note-taking apps, and content management systems. CommonMark is the most widely adopted standardized specification.
How does the converter work?
The tool passes the Markdown input through a CommonMark-compliant parser that produces an Abstract Syntax Tree (AST). The AST is then rendered to HTML, with GFM extensions enabled by default. Tables are converted to <table> elements with <thead> and <tbody>. Task list items (- [x]) become <input type='checkbox' checked> elements. Fenced code blocks with a language tag (```python) receive a language class on the <code> element for downstream syntax highlighters like Prism or highlight.js. The live preview pane renders the HTML with a stylesheet so you can immediately see how the output will look.
Typical Use Cases
- Previewing Markdown documentation before publishing to a static site or wiki
- Exporting a README or blog post written in Markdown to HTML for a CMS
- Generating HTML email body content from a Markdown template
- Checking that Markdown tables and task lists render correctly before committing
Step-by-step Guide
- Step 1: Type or paste your Markdown source into the input editor.
- Step 2: The HTML output and live preview update in real time as you type.
- Step 3: Toggle GFM extensions (tables, task lists, strikethrough) as needed.
- Step 4: Copy the rendered HTML or download it as an .html file.
Example
Input
# Hello **Bold text** and `inline code`.
Output
<h1>Hello</h1> <p><strong>Bold text</strong> and <code>inline code</code>.</p>
Tips & Notes
- Use GFM tables by separating header and body with a row of dashes (|---|): the converter will produce a proper HTML table element.
- Code blocks with a language specifier (```js, ```python) produce <code class='language-js'> so Prism or highlight.js can add syntax colors.
- The HTML output does not include <html>, <head>, or <body> tags – it is a fragment for embedding in an existing HTML document.
Frequently Asked Questions
What is the difference between CommonMark and GitHub Flavored Markdown (GFM)?
CommonMark is the standardized specification for core Markdown syntax. GFM is GitHub's extension that adds tables, task lists, strikethrough, and autolinks on top of CommonMark. The converter supports both.
Does the tool sanitize the HTML output?
By default the HTML output is not sanitized. If you plan to render it in a browser alongside user-supplied content, apply a sanitizer like DOMPurify to prevent XSS vulnerabilities.
Can I convert HTML back to Markdown?
The tool converts in one direction only (Markdown → HTML). To convert HTML to Markdown, a specialized reverse-converter or a tool like Turndown is needed.
Markdown → HTML
Convert Markdown to HTML — live, with rendered preview and PDF print function.
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