Markdown to HTML Converter — Free Online Tool

Convert Markdown to HTML instantly in your browser. Supports GFM, tables, code blocks and more. Free, no signup.

Runs entirely in your browser — no data leaves your device

No account, no signup, completely free

Instant results — no waiting for server processing

Works offline once the page is loaded

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✅Runs entirely in your browser. Your text never leaves your device — no server, complete privacy.

Markdown Input

Markdown is a lightweight markup language used widely in documentation, README files, blog posts, and static site generators. This tool converts your Markdown source to clean HTML using the industry-standard marked library, which fully supports GitHub Flavoured Markdown (GFM), including tables, task lists, fenced code blocks, and strikethrough. The output can be previewed live in the built-in rendered preview panel, or downloaded as a standalone HTML file. Everything runs in your browser — your text is never sent to a server.

How to use

Paste or type your Markdown source into the input textarea on the left.
The HTML output is generated instantly. Click 'Preview' to see the rendered result.
Copy the HTML to clipboard or download it as an .html file.

FAQ

What Markdown features are supported?

The converter uses the marked library with GitHub Flavoured Markdown (GFM) enabled. Supported features include headings, bold, italic, strikethrough, inline code, fenced code blocks, blockquotes, ordered and unordered lists, task lists (- [ ] and - [x]), tables, horizontal rules, and links with optional titles. HTML passthrough is also supported — raw HTML in the Markdown source is preserved in the output.

Does the output include a full HTML document wrapper?

The output from this converter is a fragment — just the HTML elements converted from your Markdown, without an outer <html>, <head>, or <body> tag. This is the most useful format for embedding the output into an existing HTML page or template. If you need a complete standalone HTML file, the downloaded .html file includes a minimal document wrapper with a charset meta tag.

Can I use this to preview README files?

Yes. GitHub and most Git hosting platforms render README.md files using GFM. This tool uses the same GFM standard, so the preview here closely matches what GitHub will display. Paste the contents of your README.md and use the Preview button to see how it will look before pushing it to your repository.

Why use Markdown instead of writing HTML directly?

Markdown is far faster to write than HTML for prose content. A heading is # Title instead of <h1>Title</h1>. Bold text is **word** instead of <strong>word</strong>. Markdown is also human-readable in its raw form, which makes it ideal for documentation that lives in version control alongside code. This converter is useful when you need to go from the Markdown source back to the HTML it represents — for example, when injecting content into a CMS or email template.

Is my text sent to a server?

No. The conversion runs entirely in your browser using the marked JavaScript library. Your text is never sent to any server or third-party service. You can safely use this tool with confidential documents.

What is the maximum input size?

There is no hard limit imposed by this tool — the conversion is limited only by your browser's JavaScript memory. In practice, Markdown documents up to several megabytes convert instantly. Extremely large documents (tens of megabytes) may be slow on lower-powered devices.