Markdown ⇔ HTML Converter
Bidirectional real-time conversion between Markdown and HTML.
Supports GFM extensions (tables, etc.), Pretty Print, and sanitization.
Input
Please enter some text.
Output
About Markdown ⇔ HTML Converter
This "Markdown ⇔ HTML Converter" is a free web-based tool that lets you bidirectionally convert text in real time right in your browser. It is extremely useful for creating README files, writing blog posts, or batch-converting existing HTML content into Markdown format.
In addition to standard Markdown syntax, it fully supports GitHub Flavored Markdown (GFM), which handles tables, task lists, and more.
It also features a "Pretty Print" function that neatly indents generated HTML tags, and a "Sanitize (DOMPurify)" function that removes malicious scripts for security. All processing is completed within your browser, so your input text data is never sent to an external server, ensuring safe usage.
How to use Markdown / HTML Converter
Select Conversion Direction
Use the buttons at the top to select either "Markdown → HTML" or "HTML → Markdown".
Enter Text & Set Options
Paste the text you want to convert into the input area on the left. Check the options such as Enable GFM or Pretty Print as needed.
Preview & Copy the Code
Review the real-time converted output in the right panel. Check the design using the "Preview" tab, then press the copy button if everything looks good.
Markdown & HTML Glossary
- Markdown
- A lightweight markup language that lets you easily format headings, lists, links, and more by adding simple symbols to plain text. Widely used on GitHub, Notion, and more.
- GFM (GitHub Flavored Markdown)
- GitHub's extended Markdown specification. It allows you to write features not supported in standard Markdown, such as tables, task lists [ ], and strikethrough ~~.
- HTML (HyperText Markup Language)
- The markup language for creating web pages. It uses symbols called tags (e.g., <h1>) to convey the structure and meaning of content to browsers.
- Sanitize
- The process of removing malicious scripts, iframes, and other dangerous elements from HTML code to prevent vulnerabilities such as XSS (Cross-Site Scripting).
- Pretty Print
- A feature that automatically inserts proper indentation and line breaks into generated HTML code, formatting it into a structure that is easy for humans to read and edit.
Markdown Converter FAQ
- Q.Does this converter support GFM tables?
- Yes. By checking the "Enable GFM" option, the tool fully supports GitHub-standard tables, strikethrough, and task lists.
- Q.Is the conversion process safe? (Is my data sent to a server?)
- Yes, all conversion is performed locally in your browser using JavaScript. No data is ever sent to a server. Enabling the "Sanitize" option uses DOMPurify to safely remove malicious scripts.
- Q.Can I preview the rendered HTML?
- Yes. Switch to the "Preview" tab in the output panel on the right to see a real-time visual rendering of the markup as it would appear in a browser.
- Q.What is the Pretty Print feature useful for?
- Enabling "Pretty Print" automatically adds proper indentation and line breaks to the converted HTML code, making it easier for humans to read and edit.
- Q.Can I use this on smartphones and tablets?
- Yes. It works seamlessly on mobile browsers for smartphones and tablets, not just desktop PCs.
Use Cases
Blog & CMS Publishing
Convert articles drafted in Markdown into clean HTML blocks and paste them directly into standard CMS editors like WordPress for publishing.
Legacy Site Migration
Batch-convert articles from old HTML-based websites into Markdown for migration to modern static site generators (SSGs) like Astro, Hugo, or Next.js.
Documentation & README Creation
When creating README.md files for GitHub or GitLab, quickly convert complex HTML such as tables into Markdown notation to format them efficiently.
Sharing on Social Media & Chat Tools
Useful for copying and pasting formatted text into Markdown-supporting chat tools like Slack and Discord.
Send Feedback
Please let us know your thoughts to help us improve the tool.
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