Markdown to HTML

Convert a Markdown document

Paste Markdown or open a UTF-8 .md file. Choose an HTML fragment for an existing page, or a complete HTML document with its own title. Review the rendered preview and generated source, then copy or download the HTML. For the opposite direction, use HTML to Markdown.

Choose a fragment or a complete page

A fragment contains the converted headings, paragraphs, lists and other content without an outer document shell. Paste it into the body of an existing page or an editor that accepts HTML. Complete-document mode adds a doctype, html element, head, UTF-8 declaration, mobile viewport metadata, title and body. Its download opens as a standalone page without a build step or an external stylesheet.

Worked example: a project note

The Markdown # Project notes becomes an h1 heading. A following paragraph containing Bring **two** notebooks. becomes a p element with strong emphasis around two. The task item - [x] Paper becomes a checked, disabled checkbox inside a list when extensions are enabled. In complete-document mode, the title you enter appears in the browser tab; it does not replace the heading in your content.

Supported Markdown features

The default extension mode supports tables, task lists and strikethrough alongside headings, ordinary lists, links, images, quotes and fenced code. Basic mode disables those GitHub-flavored extensions. Fenced code is displayed as text rather than executed, and a language label can become a class on the code element. This tool does not add syntax-coloring scripts or fetch language definitions.

Ordinary line breaks inside a paragraph follow Markdown paragraph rules. Use a blank line to start a new paragraph; two trailing spaces can create an explicit line break. Different publishing systems may support extra syntax such as footnotes, diagrams, math, front matter or custom components. Those extensions are not interpreted here, and the destination system may style the same HTML differently.

Sanitized source and a quiet preview

Both copied and downloaded output are sanitized. Scripts, event handlers, embedded frames, forms, style rules and unsupported elements are removed rather than carried into the exported document. Basic formatting tags and safe link or image references remain. Task checkboxes are disabled so they represent the source document’s state rather than an interactive form.

The on-page preview disables links and omits images to avoid navigating away or loading remote resources from your input. Exported HTML retains permitted image references, so opening the downloaded page can load those images. Image files are not embedded or copied into the download. Relative paths remain relative and must resolve from the final document’s location.

Limitations and privacy

Files must be UTF-8 and no larger than two megabytes. Processing occurs in the browser, with no upload or automatic saving. Keep your original Markdown: converting it to HTML and back need not preserve exact spacing, list markers or equivalent source syntax. The complete document supplies structure rather than a visual theme, so it will not reproduce a website’s fonts, layout or branding.

Markdown conversion FAQ

Can I keep scripts from raw HTML?

No. Sanitization applies even to HTML written directly inside the Markdown. This converter exports document content, not executable applications.

How is this different from Markdown Preview?

The converter adds local file input, visible HTML source, selectable extensions and a complete-document export. The preview tool remains useful for writing and inspecting a fragment side by side.