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Convert Markdown to HTML with live preview. Use for publishing Markdown; for editing with preview use markdown-editor, for reverse direction use html-to-markdown. Input: Markdown ≤10MB. Returns HTML. 100% client-side.
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Converts Markdown documents to clean HTML with GitHub Flavored Markdown support for tables, task lists, fenced code blocks, and emoji. Offers HTML sanitization toggle, pretty-print (formatted) or minified output, a split-pane preview for before/after comparison, and word/character count.
Markdown is the preferred authoring format but HTML is required for web publishing. Simplifies the conversion process with customizable output formatting, ensuring correct rendering without manual HTML tagging.
This tool is part of the DevStackIO platform — a collection of free online developer tools from DevStackIO. Browse more free developer resources on DevStackIO.
Web developers, content publishers, static site generator users, and anyone who authors in Markdown and publishes to the web.
Paste or type Markdown into the left input pane; the converted HTML appears in the right output pane
Toggle GFM features on/off to control whether GitHub-specific syntax (task lists, tables, emoji) is processed
Enable HTML sanitization to strip dangerous tags (script, onclick, etc.) for secure output in user-facing contexts
Select output formatting: Pretty-print (indented, readable HTML) or Minified (single line, smaller size)
Use the word/character count to track document size; switch to split-pane view for side-by-side comparison
Copy the HTML output to clipboard or download as .html file; the preview pane shows rendered HTML appearance
Input Markdown: "# Title\n\nHello **world**\n\n- Item 1\n- Item 2" -> Output HTML: "<h1>Title</h1>\n<p>Hello <strong>world</strong></p>\n<ul>\n<li>Item 1</li>\n<li>Item 2</li>\n</ul>"Input with task list: "- [x] Done\n- [ ] Todo" with GFM on -> Output: "<ul class=\"contains-task-list\">\n<li class=\"task-list-item\"><input type=\"checkbox\" checked disabled> Done</li>\n<li class=\"task-list-item\"><input type=\"checkbox\" disabled> Todo</li>\n</ul>"Can it convert Markdown to HTML with inline styles?
No, the output is semantic HTML without inline styling; use CSS for styling.
Does it support custom Markdown extensions?
It supports GFM extensions; custom or uncommon extensions may not be recognized.
What HTML tags are stripped when sanitization is enabled?
Dangerous tags like script, iframe, object, embed, and event handlers are removed.
Can I customize the HTML wrapper/doctype?
The output is an HTML fragment; wrap it manually for a full HTML page structure.
Authoritative specifications, standards, and in-depth reading for Markdown to HTML Converter.
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