Markdown to HTML

How to Use

1. 1Write or paste Markdown text
2. 2See the HTML output update in real time
3. 3Copy the generated HTML code
4. 4Use in your web pages or emails

Features

• Real-time conversion
• GitHub Flavored Markdown support
• HTML code and preview modes
• Table and code block support
• Copy and download output

Conversion example

**bold** → <strong>bold</strong>, *italic* → <em>italic</em>, # Heading 1 → <h1>Heading 1</h1>, `- item` → list items inside <ul>. Fenced ```code``` blocks become <pre><code> with language hints preserved.

Sanitization details

• <script>, <iframe>, <object>, <embed> tags removed entirely
• Inline event handlers (onclick=…) stripped
• javascript: URIs neutralized
• This is blocklist sanitization — for hostile-user content use a full sanitizer library server-side too

Preview vs downloaded file

The preview shows the generated HTML inside the app's own styling. The download wraps that HTML in a minimal standalone document with simple CSS so you can open it directly in a browser. That is convenient for review, but it is not a substitute for your production template.

Real-World Use Cases

• Converting documentation snippets into HTML for a CMS or static site
• Previewing how Markdown will render before publishing it elsewhere
• Turning notes or README content into shareable HTML quickly
• Downloading a standalone HTML file for a draft or handoff
• Testing how tables, blockquotes, code fences, and lists come through the parser

Best Practices

• Inspect both the HTML code and preview when the output is headed into a styled production environment
• Use the preview for structure checks and the raw HTML view for copy-paste into templates
• Treat the built-in sanitization as a convenience layer, not your only security boundary
• Download the standalone file when you need a quick artifact to review outside the app
• Verify tables, code blocks, and embedded links in the destination platform after export

Common Mistakes to Avoid

• Assuming the lightweight sanitization is a full security solution for hostile user content
• Pasting raw HTML and expecting every dangerous construct to be neutralized perfectly
• Confusing the preview with a final production rendering environment that may style elements differently
• Resetting the editor and forgetting the tool starts with sample Markdown content
• Treating Markdown syntax support as identical across every downstream CMS or email tool

Troubleshooting

• If the output looks empty, confirm the Markdown input was not reset or cleared accidentally
• If the preview differs from your site, remember the destination CSS may style the same HTML differently
• If HTML was stripped, check whether it matched the tool's blocked tag or handler patterns
• If a CMS rejects the output, compare its supported HTML subset against the generated markup
• If you need hardened sanitization for untrusted submissions, add a dedicated sanitizer outside this tool