Markdown to HTML & HTML to Markdown Converter
Convert Markdown to HTML and HTML to Markdown. Transform between formats for web publishing, documentation, and content editing. Bidirectional conversion tool.
Markdown Input
HTML Output
Output will appear here after conversion
About Markdown to HTML & HTML to Markdown Converter
A bidirectional Markdown and HTML converter that seamlessly transforms between both formats. Convert Markdown to clean, semantic HTML for web publishing, or convert HTML back to Markdown for easy editing and version control. This versatile tool handles both HTML to Markdown and Markdown to HTML conversions, making it essential for content creators working across different platforms and formats.
Why use a Markdown to HTML & HTML to Markdown Converter?
This converter streamlines workflows by enabling instant conversion between Markdown and HTML formats. Whether you need to publish Markdown content to the web (Markdown to HTML) or extract content from HTML sources for editing (HTML to Markdown), this tool saves time and ensures accurate format transformation. Perfect for maintaining documentation in multiple formats and migrating content between systems.
Who is it for?
Essential for developers converting between README files and web documentation, content managers migrating HTML content to Markdown-based systems, bloggers switching between platforms, technical writers managing documentation in both formats, and anyone who needs reliable HTML to Markdown or Markdown to HTML conversion for their workflow.
How to use the tool
Select your conversion direction: Markdown to HTML or HTML to Markdown
Paste your source content (Markdown or HTML) into the input field
Click convert to instantly transform between formats
Review and copy the converted output
Use the preview feature to see how your Markdown renders as HTML
Frequently Asked Questions
How do I convert Markdown to HTML?
Paste your Markdown into the input area. The tool converts it to HTML in real-time, with both rendered preview and raw HTML output. Supports CommonMark + GFM (GitHub Flavored Markdown) extensions: tables, task lists, fenced code blocks, strikethrough. Copy the HTML output for use in blogs, CMSes, or static sites. Conversion runs entirely in your browser — your Markdown never leaves the device.
What is Markdown?
Markdown is a lightweight markup language designed to be easy to write and read in plain text. Created by John Gruber and Aaron Swartz in 2004. Syntax: `**bold**`, `*italic*`, `# heading`, `- list item`, `[link](url)`, ``. CommonMark (2014) is the modern standardized version. GitHub Flavored Markdown (GFM) extends it with tables, task lists, strikethrough, autolinking. Used in: GitHub READMEs, blog posts, documentation (Read the Docs, GitBook), static sites (Hugo, Jekyll, Next.js).
Is my Markdown sent to a server?
No — conversion runs entirely in your browser via JavaScript (typically using marked.js or markdown-it library). Your Markdown never reaches a server, never gets logged. Verify in DevTools' Network tab: zero HTTP requests during conversion. Safe for sensitive drafts.
What Markdown features does this support?
Standard CommonMark + GFM extensions. Headings (`#` through `######`), bold/italic, ordered and unordered lists, links, images, blockquotes, code blocks (fenced with backticks), inline code, horizontal rules. GFM extensions: tables (with alignment), task lists (`- [x]` checkboxes), strikethrough (`~~text~~`), autolinks, footnotes (sometimes). Advanced features: emoji shortcodes (`:smile:`), math (LaTeX-style `$...$`), diagrams (Mermaid) — depend on the tool's extensions.
What's the difference between CommonMark and GitHub Flavored Markdown?
CommonMark (2014) is the formal Markdown specification — standardised syntax for the original features. GitHub Flavored Markdown (GFM) extends CommonMark with: tables, task lists, strikethrough, autolinks, fenced code blocks with syntax highlighting hints, footnotes. Most modern Markdown processors implement CommonMark + GFM together; the result is the de facto Markdown standard in 2026. This tool typically supports both.
How do I add syntax highlighting to code blocks?
Fenced code blocks with a language identifier: ` ```javascript ` then your code then ` ``` `. The HTML output includes a `<code class='language-javascript'>` element. For client-side syntax highlighting in your final page, layer a highlighter library (Prism.js, highlight.js, Shiki) on top. The Markdown processor identifies the language; the highlighter applies colour. Common languages: javascript, typescript, python, ruby, go, rust, html, css, json, yaml, bash.
Can I include raw HTML inside Markdown?
Yes — CommonMark allows raw HTML inline and as blocks. `<span style='color: red'>red</span>` inside Markdown renders as styled HTML in the output. Useful when Markdown's vocabulary is insufficient: custom layouts, specific styling, embedded media. Caveats: (1) Don't mix Markdown syntax inside HTML (Markdown won't process). (2) For untrusted user input, raw HTML opens XSS vectors — use a sanitizer like DOMPurify on the output. (3) Some static-site builders disable raw HTML for security; check your tool.
What's the reverse direction (HTML to Markdown)?
Not this tool's direction — but there are HTML-to-Markdown converters (turndown.js, html-to-markdown libraries). Use case: importing content from a CMS or copy-pasting from a website to a Markdown blog. Imperfect: HTML supports many constructs Markdown doesn't (complex tables, custom styling, embedded JS) — round-trip conversion loses these. For one-way HTML import to Markdown, use a dedicated converter; for round-trip Markdown editing, keep the source in Markdown and convert to HTML only at render time.
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