About the Markdown to HTML Converter
Markdown to HTML Converter turns Markdown text into HTML, and HTML back into Markdown, right in your browser. Paste your text on the left and the converted version appears on the right. For Markdown to HTML you can switch to a Preview that shows how the page will look, drawn inside a locked-down frame that cannot run scripts. For HTML to Markdown you choose the heading style, the bullet marker and how code blocks are written. The Markdown side follows CommonMark plus GitHub-style tables and strikethrough. Going from HTML to Markdown keeps common elements and simplifies others, so tables become plain text.
Updated September 2026
How to use the Markdown to HTML Converter
- 1Pick a direction: Markdown → HTML or HTML → Markdown.
- 2Paste or type your text, or press Try a sample.
- 3Adjust the options, such as line breaks or heading style.
- 4Check the Preview if you like, then copy the result or download it.
Markdown to HTML in one click
Markdown is a light way of writing formatted text: a # makes a heading, asterisks make bold and italic, and a dash starts a list item. HTML is what browsers read. Converting between them is useful when you write in Markdown but need HTML for a web page, an email template or a CMS field.
Paste your Markdown and copy the HTML from the output box. The Preview tab shows the rendered result so you can spot a missing blank line or a broken list before you publish.
HTML to Markdown for docs and notes
Going the other way helps when you want to move content from an old page into a README, a wiki or a notes app. Paste the HTML and you get clean Markdown with the style you choose: hash-style or underlined headings, dashes or asterisks for bullets, fenced or indented code blocks.
Only common elements are kept. Scripts and styles are dropped, strikethrough is lost and tables become plain text, so check the result and tidy anything that mattered.
Tables, code blocks and line breaks
- Tables: write them with pipes and a dashed header row. They become HTML tables when GitHub-style is on.
- Code blocks: fence code with three backticks and a language name to get a class such as language-js in the HTML.
- Line breaks: a single newline is a space in Markdown. Turn on line breaks to get a <br> instead.
- Strikethrough: wrap text in double tildes, like ~~this~~, to get a <del> element.
Safety when pasting HTML
The Preview uses an iframe with an empty sandbox attribute. That means no scripts, no forms and no access to this page, so a pasted script tag will not run. The exported HTML, however, is not sanitised. It contains what you wrote. Clean untrusted content before you publish it.
Everything is converted in your browser using the marked and turndown libraries, and the text is not sent anywhere. To turn a document into a printable file, use Text to PDF instead. For structured data, see JSON Formatter or XML Formatter.
Features
- Converts in both directions
- Sandboxed preview that cannot run scripts
- GitHub-style tables and strikethrough
- Choice of heading, bullet and code block styles for Markdown output
- Optional line breaks as <br>
- Copy or download converted.html or converted.md
Frequently asked questions
How do I convert Markdown to HTML?
Leave the direction on Markdown → HTML and paste your Markdown. The HTML appears straight away. Use Copy result to paste it into your page, or Download to save converted.html. Switch to Preview to see how it will look.
How do I convert HTML to Markdown?
Choose HTML → Markdown and paste your HTML. Headings, paragraphs, lists, links, images, bold, italic, code and quotes are turned into their Markdown forms. Pick a heading style and bullet marker to match your notes or project.
Are tables supported?
Markdown tables written in the GitHub style become HTML tables when the option is on, which it is by default. In the other direction, HTML tables are flattened to plain text, so the cell text stays but the table layout does not.
Is the HTML output safe to publish?
Not automatically. The converter keeps everything you typed, including any raw HTML or script tags inside your Markdown. If the text comes from someone else, clean it with a sanitising library before you put it on a website. The Preview runs in a sandboxed frame so scripts do not run there.
What Markdown flavour does it use?
CommonMark, plus GitHub-style tables and strikethrough. You can turn the GitHub extras off. Other dialects, such as extended syntax from particular editors, may not convert exactly as they do there.
Does it keep my formatting when I paste from a web page?
Copy the page's HTML source, or the element's outer HTML from your browser tools, and paste it into the HTML box. Text copied from a rendered page is usually plain text, so the formatting is already gone before it reaches the box.
Why do single line breaks disappear in the HTML?
In standard Markdown a single line break inside a paragraph is treated as a space. Tick “Line breaks become <br>” if you want each line break kept, or end a line with two spaces.