How It Works
This converter runs entirely in your browser using two battle-tested JavaScript libraries: Marked.js for parsing Markdown into HTML, and Turndown for converting HTML back into clean Markdown. No files are ever sent to a server — conversion happens locally in milliseconds.
- Markdown → Rich Text: Renders your Markdown as formatted HTML you can see and copy-paste into Word, Notion, Gmail, or any rich-text editor.
- Markdown → HTML: Converts Markdown syntax into raw HTML source code, ready to drop into a webpage or CMS.
- Markdown → Plain Text: Strips all formatting and syntax, leaving only the raw words.
- HTML → Markdown: Reverses the process — takes HTML source and outputs clean, readable Markdown.
- Rich Text → Markdown: Paste rendered HTML (e.g., from a webpage) and get back structured Markdown.
- HTML → Plain Text: Strips HTML tags to give you clean readable text.
Pro Tips
Cleaning up AI-generated content
ChatGPT, Claude, and other LLMs often output responses formatted in Markdown with headers, bullet points, and bold text. Use Markdown → Rich Text mode to turn that raw syntax into something you can paste directly into a document or email.
Pasting into Gmail or Outlook
Convert your Markdown to Rich Text first, then use the Copy button. When you paste into Gmail or Outlook's compose window, the formatting transfers automatically — no asterisks or hash symbols visible.
Reverse-engineering web content
If you want to repurpose content from a webpage, use your browser's "View Source" or DevTools to grab the HTML, then run it through HTML → Markdown to get clean, portable Markdown you can edit in any text editor.
Tables, code blocks, and more
This converter supports GitHub Flavored Markdown (GFM), which means tables, task lists, fenced code blocks with syntax hints, and strikethrough text all convert correctly.
Use Cases
- Formatting AI chatbot output before pasting it into a report or presentation
- Converting README files into publishable HTML for documentation sites
- Turning rich CMS or wiki content back into portable Markdown for version control
- Cleaning up scraped web content to plain text for analysis
- Preparing Markdown blog posts for email newsletters that require HTML
- Migrating documentation between platforms (Notion, Confluence, GitHub, etc.)
Privacy & Security
Cool File Tools is built on a strict client-side-only philosophy. Every conversion on this page happens inside your browser using JavaScript — no content is sent to any server, stored in any database, or logged in any way. This makes it safe to convert sensitive documents, internal communications, or proprietary content.
Frequently Asked Questions
# for headings, ** for bold, and - for lists — designed to be readable as-is and easily converted to HTML.