Markdown HTML Converter Tool - Client-Side Parser and Free Online Converter
First Published:
Last Updated:
Free Markdown to HTML and HTML to Markdown converter with instant browser-based conversion. All conversion processes are performed entirely within your browser - during the use of this tool, your data never leaves your device or gets uploaded to any server.
⚠️ IMPORTANT DISCLAIMER:
- This tool is provided for demonstration purposes only, "AS IS" without any warranties.
- We accept NO responsibility for data loss, conversion errors, or any issues arising from use.
- Complex HTML or Markdown may not convert perfectly - always verify results.
- DO NOT rely on this tool for critical or production content without thorough testing.
- Always keep backups of your original content before conversion.
- By using this tool, you accept FULL responsibility for all outcomes and consequences.
Privacy & Security: This tool uses ShowdownJS library and operates entirely within your browser using client-side JavaScript. During the conversion process, no data is transmitted to servers, no files are uploaded online, and all processing happens locally on your device. Even if our website goes offline, the tool will continue to work once loaded. However, proper conversion depends on valid input format. By using this tool, you agree to our Web Tools Disclaimer.
🔍 Live HTML Preview:
Note: External images and embeds are replaced with placeholders for security. The actual HTML output includes all original content.
HTML preview will appear here...
Features:
- 📝 Bidirectional Conversion: Convert Markdown to HTML and HTML back to Markdown
- 🖥️ Client-Side Processing: All operations performed locally in your browser
- 📄 Text & File Support: Convert both text input and files
- 🎨 Multiple Flavors: Support for vanilla, GitHub-flavored, and original Markdown
- ⚙️ Customizable Options: Tables, strikethrough, task lists, emoji, and more
- 👁️ Live Preview: See rendered HTML output in real-time
- 📱 Mobile Friendly: Responsive design works on all devices
- 🔒 No Data Transmission: Your content never leaves your device
- 💾 File Download: Download converted files directly
How to Use:
- Select a preset (Vanilla, GitHub, or Original) or customize options
- Choose between Text or File mode
- For text: Enter Markdown or HTML directly into the input field
- For files: Select a .md or .html file - it will load automatically to the appropriate field
- Click "MD to HTML" to convert Markdown to HTML
- Click "HTML to MD" to convert HTML back to Markdown
- View the live HTML preview below
- Use download buttons to save converted files
Supported Markdown Features:
- Headers: # H1, ## H2, ### H3, etc.
- Emphasis: *italic*, **bold**, ***bold italic***
- Lists: Ordered and unordered lists
- Links: [text](url) and auto-linking
- Images: 
- Code: Inline `code` and code blocks
- Tables: GitHub-style tables (when enabled)
- Strikethrough: ~~text~~ (when enabled)
- Task Lists: - [x] Done, - [ ] Todo (when enabled)
- Emoji: :smile: :heart: (when enabled)
Usage Notes:
- Conversion Quality: Complex HTML may not convert perfectly back to Markdown
- Preview Rendering: The preview shows how HTML will be rendered in a browser
- File Formats: Supports .md, .markdown, .txt for Markdown; .html, .htm for HTML
- Browser Compatibility: Works in all modern browsers (Chrome, Firefox, Safari, Edge)
Third-Party Libraries
ShowdownJS v2.1.0
Copyright (c) 2018, 2021 ShowdownJS
Licensed under MIT License.
GitHub Repository
References:
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