Markdown to HTML and HTML to Markdown Converter

Convert document structure instead of copying appearance

Markdown and HTML both describe documents, but they have different levels of detail. Markdown is convenient for maintaining readable source in a text editor, while HTML offers a much wider range of structure and browser behavior. Converting between them is useful when moving notes into a website, migrating an article into a Markdown-based publishing system, or simplifying copied content for documentation.

This converter handles both directions. Markdown becomes sanitized HTML suitable for further review, and supplied HTML becomes a Markdown representation of the supported content. The result is not a screenshot and does not attempt to preserve an entire website's appearance. Navigation bars, stylesheets, scripts, custom widgets, and complex page layout belong to a broader publishing system. For a good conversion, provide the document content you actually want rather than a complete application shell copied from a browser's developer tools.

Understand what survives a format change

Headings, paragraphs, emphasis, lists, quotations, links, and code are natural candidates for conversion. More complex HTML may have no direct equivalent in basic Markdown. A detailed table layout, nested custom containers, or a styled interactive component can be simplified or lose presentation details. That is a property of the target format rather than a promise that another converter could preserve every behavior without adding raw HTML.

Round trips are not guaranteed to recreate the original source. Several HTML representations can express similar visible content, and a Markdown renderer may choose a different style of tags from the one you started with. Treat the output as a new working representation. Keep the source and compare important details, particularly code blocks, nested lists, link destinations, and text that depends on special whitespace. If exact markup preservation is required, do not use a format conversion as a substitute for source editing.

Sanitization is part of this conversion workflow

Copied HTML can contain scripts, tracking resources, forms, embedded frames, and inline styles. This tool sanitizes the HTML before previewing it or converting it onward. External media and active content are excluded, and the preview runs in a restricted frame. The goal is a predictable document conversion rather than a way to execute arbitrary pasted markup inside the website.

Because of these restrictions, an image tag, video embed, or custom interactive block may disappear from the output. Add approved assets deliberately in the destination system after checking their source and publication rights. Do not remove sanitization merely to make untrusted HTML look more like the original page. A successful local preview is also not a complete security assessment: the final publishing application must apply its own content rules and output handling, especially when other people can submit documents.

A careful migration example

Suppose you are moving a short help article from an older HTML page into a Markdown repository. Start with the article body, not the entire page. Convert it, review the heading order, and compare each list and code example with the source. Check links separately, because a relative address that worked in the old folder may point somewhere else in the new repository. The converter does not know the eventual hosting path.

For Markdown-to-HTML, inspect the exported fragment in the content system that will receive it. That system may apply its own styling, remove additional elements, or expect a particular wrapper. A local preview cannot determine whether the page will have a suitable title, description, canonical URL, or navigation once published. Finish the migration by checking the real destination, keeping the original as a reference, and recording any intentional simplifications. This makes later corrections easier than trying to infer what disappeared from an old page that has already been deleted.

Handle source text and exports carefully

Keep a copy of your original input before converting or reformatting it. A useful working pattern is to preserve the source, create a separate result, and compare a few representative records or paragraphs before passing the output to another application. Include unusual cases in that comparison: quotation marks, accented names, empty values, long lines, and punctuation often reveal problems that an ordinary sentence does not.

The text entered into this tool is processed in the browser. It is not submitted to a text-processing server by this tool, but that does not remove the usual responsibilities of working on a shared device. Clipboard contents may remain available after you leave the page, and downloaded files remain in the browser's download folder. Do not paste passwords or confidential customer records merely to try a sample operation.

Text formats describe structure, not trust. A document that parses successfully can still contain inaccurate information, a suspicious link, or content you do not have permission to publish. Review the result before using it in a spreadsheet, website, report, or production system. Where your workflow needs an audit trail, record the source filename, the transformation you applied, and the date outside the tool. Browser output is a working artifact, not a substitute for your organization's review process.

When testing an unfamiliar workflow, begin with a short, non-sensitive sample whose expected result you can explain. Include at least one awkward case instead of testing only simple words and numbers. Open a downloaded export in its destination application and check it there too. This small round-trip test is often more informative than trying a large private document first and discovering a format mismatch after sharing it.

Frequently asked questions

Related tools

• Markdown Editor with Preview
• Text Diff Checker
• HTML Formatter

Reference and further reading

Turndown's HTML-to-Markdown documentation provides background on the relevant format, technology, or requirements. External services have their own policies and may change independently of this page.