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Free online Markdown editor with live preview. Write and preview Markdown in real-time with syntax highlighting.
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Markdown is a lightweight markup language created by John Gruber in 2004. It allows writers to format plain text using simple, readable syntax that converts to clean HTML. Unlike WYSIWYG editors that hide the underlying structure, Markdown makes formatting visible as you type — using characters like #, *, and - to indicate headings, emphasis, and lists.
The core syntax is intentionally minimal: # for headings, * or _ for italic, ** or __ for bold, backticks for inline code, dashes for unordered lists, numbers for ordered lists, and brackets + parentheses for links. This simplicity is why Markdown has been adopted by GitHub, Stack Overflow, Reddit, Notion, and virtually every developer platform.
Markdown's superpower is that it works everywhere. Write once in your editor, and the same file renders beautifully on GitHub, in documentation sites (Docusaurus, GitBook), in static site generators (Next.js, Hugo, Jekyll), in note-taking apps (Obsidian, Notion), and in messaging platforms (Slack, Discord, Teams).
Extended Markdown (CommonMark, GFM) adds tables, task lists, strikethrough, code blocks with syntax highlighting, emoji, and auto-linking. GitHub Flavored Markdown (GFM) adds issue references, user mentions, and commit SHA linking — making it the standard for collaborative development on GitHub.
This live preview tool helps you write and verify Markdown in real time. Type on the left, see the rendered result on the right. Use it to draft README files, documentation, blog posts, or any formatted text. The preview updates instantly as you type, showing exactly how your Markdown will appear when rendered.
Markdown is also the backbone of modern static site generation. Frameworks like Next.js, Hugo, and Jekyll allow you to write content in Markdown and compile it into fast, deployable HTML websites. Front matter — YAML metadata delimited by triple dashes at the top of a Markdown file — adds page titles, dates, tags, and layout information. This combination of Markdown for content and front matter for metadata has become the dominant pattern for documentation sites, blogs, and knowledge bases.
Markdown and WYSIWYG serve different purposes. Markdown is better for version control, collaboration, and generating consistent output across platforms. WYSIWYG is better for visual design and precise layout control. Most developers prefer Markdown for documentation and content creation because it integrates naturally with their existing workflows (git, code editors, CI/CD).
Markdown is a writing format designed for human readability in plain text. HTML is a markup language for structuring web content. Markdown converts to HTML but is much simpler to write and read. Markdown is best for content; HTML is best when you need precise control over layout, styling, or interactive elements.
Yes. Most Markdown processors allow inline HTML. You can mix Markdown and HTML in the same document, which is useful when you need features not covered by basic Markdown syntax (like tables with specific alignment, div containers, or embedded videos). GitHub and most platforms support this.
Front matter is YAML metadata at the top of a Markdown file, delimited by triple dashes (---). It contains page-level data like title, date, tags, author, and layout. Static site generators use front matter to control how content is processed and rendered. For example, you might set title: 'My Post' and layout: 'blog' to define the page title and template.
Yes, most Markdown processors support fenced code blocks with syntax highlighting. Use triple backticks followed by the language name (```python) to create a highlighted code block. GitHub Flavored Markdown also supports inline code highlighting and diff-style formatting with + and - prefixes to show code changes.