Free Converter
Markdown to HTML Converter
Transform Markdown text into production-ready HTML code with live preview support.
Transform Markdown text into production-ready HTML code with live preview support.
Markdown is a lightweight markup language created by John Gruber in 2004 to let writers produce structured HTML using plain text conventions: hash characters for headings, asterisks for emphasis, hyphens for lists, indented blocks for code. The format has become the default for README files, technical documentation, blog drafts, static site generators, and any context where the writing should be readable as plain text and as rendered output. Converting Markdown to HTML is the rendering step that turns the source into a webpage.
This converter uses the marked library, the most widely adopted Markdown renderer in JavaScript. Marked supports CommonMark and GitHub Flavored Markdown (GFM), which means tables, fenced code blocks, task lists, strikethrough, and autolinking all work correctly in addition to standard Markdown features.
Output is plain HTML — semantic tags for headings, paragraphs, lists, links, and images, plus class hooks for code blocks where syntax highlighting tools expect them. The output paste cleanly into any CMS, embeds in static site generators, or serves as standalone .html. No CSS or JavaScript is added; styling the result is left to your downstream context.
Markdown is the format writers and developers prefer; HTML is the format browsers render. Most static site generators and CMS platforms convert Markdown to HTML behind the scenes, but you sometimes need the conversion as a standalone step — pasting into a CMS that does not have Markdown support, generating HTML for emails, producing a quick preview, or extracting the rendered output for further processing.
HTML is also the canonical format for any content that will ultimately be displayed in a browser. Email newsletters built from Markdown drafts, documentation pages embedded in larger HTML applications, and blog posts pasted into editors that expect HTML all benefit from a clean conversion.
Paste Markdown, get HTML.
Marked uses a two-pass architecture. The lexer tokenizes the input into block-level tokens (headings, paragraphs, lists, code blocks) and inline tokens (emphasis, links, images). The parser walks the token stream and emits HTML, applying renderer hooks for each token type.
GitHub Flavored Markdown extensions are enabled by default: tables (using pipe syntax), fenced code blocks (triple backticks with language hints), task lists (- [ ] and - [x]), strikethrough (using double tildes), and URL autolinking. Code blocks emit pre wrapped around code with optional language class for downstream syntax highlighting.
Output sanitization is left to downstream consumers. Marked emits whatever the input produces, including raw HTML embedded in the Markdown. If you accept untrusted input, run the output through DOMPurify or a similar HTML sanitizer before rendering in a browser.