Markdown/HTML mutual conversion tool
Switch between Markdown to HTML and HTML to Markdown and convert between them without uploading files.
Content to convert
Choose a conversion direction and paste the code or open a compatible file.
Input Markdown
Direct input 0 charactersConversion result HTML
0 characterssecure preview
Display in a separate iframe that does not execute JavaScript.
Conversion details
- Input
- 0
- Number of input lines
- 0
- Number of resulting characters
- 0
- Number of result rows
- 0
- Result UTF-8 bytes
- 0
About this tool
You can convert between READMEs, specifications, CMS manuscripts, etc. between Markdown and HTML, and copy and save them as files.
Features
- Headings, paragraphs, lists, links, images, quotes, code, tables, task lists
- HTML fragments/complete HTML, GFM, line break rules, converting relative URLs to absolute URLs
- Select and drag and drop Markdown/HTML files
How to use
- Select Markdown → HTML or HTML → Markdown.
- Paste the code or open the supported file and convert.
- Check the results and preview, then copy or save.
Safety and limitations
- The input content and conversion results are processed within the browser and are not sent to the server.
- Preview removes executable content such as scripts, iframes, forms, and event attributes.
- When you enable the preview of external images, a communication occurs from the browser to the image distribution source.
- Markdown and HTML are not completely one-to-one, and CSS, complex layouts, and proprietary attributes may not be preserved through round-trip conversion.
Privacy: The input code and files are processed only within the browser and are not sent or saved to the Develop Tools server.