What is the Markdown Previewer?
Markdown is a lightweight markup language used to format plain text. A Markdown Previewer parses this text in real-time and renders it as semantic HTML, exactly as it would appear on platforms like GitHub or Notion.
Key Features
Real-time HTML rendering
GitHub Flavored Markdown (GFM) support
DOMPurify XSS Sanitization
Export to .md file
How to use the Markdown Previewer
- Type or paste your Markdown syntax in the left editor.
- The right pane will instantly update with styled HTML typography.
- Click download to save the raw .md file to your computer.
Examples
Input
## Heading **Bold Text** - List Item
Output
(Renders as formatted HTML Heading, Bold text, and Bullet List)
Common Errors & Troubleshooting
Missing Spaces
Markdown headers require a space between the hash and the text.
##Heading (Fails) -> ## Heading (Works)
When should you use this tool?
- Drafting README.md files for GitHub repositories.
- Writing CMS content or blog posts.
- Testing complex nested lists or table syntax.
What's the difference?
Markdown
Easy to read and write in plain text. Ideal for content creation.
HTML
Complex markup tags. Ideal for deep web layout structure.
Tool Comparison
| Feature | ByteUtils |
|---|---|
| Live Preview | |
| GitHub Flavored | |
| XSS Sanitized |
Frequently Asked Questions
Which flavor of Markdown is supported?
We support GitHub Flavored Markdown (GFM), including tables and task lists.
Is the rendered preview safe from XSS?
Yes. All HTML is sanitized via DOMPurify before rendering.
Privacy First
All processing happens directly in your browser. Your data, payloads, and files are never uploaded to our servers or tracked.
Tool Information
- Category: developer
- Runs in Browser: Yes
- Requires Login: No
- Mobile Friendly: Yes