Markdown Preview Tutorial — Live Preview Online
Learn Markdown syntax with our free live preview tool. Write headings, lists, links, code blocks, and tables — see results instantly.
What Is Markdown Preview?
Markdown is a lightweight markup language used by GitHub, Stack Overflow, Reddit, Notion, and virtually every developer documentation platform. It lets you write formatted text using simple symbols — no HTML required. Our live Markdown preview tool shows you the rendered output in real time as you type, making it perfect for learning Markdown syntax, drafting README files, writing documentation, and composing formatted messages. If you write code, you need to know Markdown — this tutorial covers everything from basic formatting to advanced features.
The Problem This Solves
You need to write a README for your GitHub project, format a pull request description, or create documentation, but you're not sure about Markdown syntax and don't want to commit-push-refresh just to see how your formatting looks.
Why This Matters
Markdown is the universal language of developer documentation. GitHub READMEs, pull request descriptions, issue comments, Jupyter notebooks, Slack messages, Confluence pages, and static site generators (Jekyll, Hugo, Gatsby) all use Markdown. Mastering it once means you can write formatted content anywhere in the developer ecosystem without learning different formatting systems.
Getting Started — Step by Step
Open the Markdown Preview tool
Navigate to the Markdown Preview page. You'll see a split editor: write Markdown on the left, see the rendered HTML preview on the right. The preview updates in real time as you type.
Write headings and paragraphs
Use # for headings: # Heading 1, ## Heading 2, ### Heading 3. Regular text becomes paragraphs automatically — just leave a blank line between paragraphs. Use **bold** for bold and *italic* for italic text.
Add lists, links, and images
Create bullet lists with - item or * item. Numbered lists with 1. item. Add links: [text](url). Add images: . Nested lists use indentation (2 or 4 spaces before the bullet).
Include code blocks and tables
Inline code uses backticks: `code`. Code blocks use triple backticks with an optional language tag for syntax highlighting: ```python. Tables use pipes and dashes: | Column | Column | with |---|---| for the separator row.
Copy or export your Markdown
Once your content looks right in the preview, copy the raw Markdown to paste into GitHub, your documentation tool, or any Markdown-compatible editor. You can also copy the rendered HTML if you need the formatted output for a website or email.
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Real-World Example
# Project Title A **brief** description of your project. ## Installation ```bash npm install my-package ``` ## Features - Fast performance - Easy configuration - *Cross-platform* support [View documentation](https://docs.example.com)
<h1>Project Title</h1> <p>A <strong>brief</strong> description of your project.</p> <h2>Installation</h2> <pre><code>npm install my-package</code></pre> <h2>Features</h2> <ul> <li>Fast performance</li> <li>Easy configuration</li> <li><em>Cross-platform</em> support</li> </ul> <a href="https://docs.example.com">View documentation</a>
Pro Tips & Common Mistakes
- 1 Always leave a blank line before headings, lists, and code blocks — Markdown requires whitespace separation.
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2
Use
```languagefor syntax-highlighted code blocks:```python,```javascript,```bash. -
3
GitHub Flavored Markdown (GFM) adds task lists:
- [x] Doneand- [ ] Todo. - 4 Preview your README locally before pushing — our tool is faster than the git commit-push-check cycle.
Frequently Asked Questions
Is Markdown the same on GitHub, GitLab, and other platforms?
The core syntax (headings, lists, links, code) is the same everywhere. However, each platform adds extensions: GitHub Flavored Markdown (GFM) adds task lists, tables, and autolinks. GitLab adds math blocks and diagrams. Our preview uses standard Markdown plus GFM extensions.
Can I use HTML inside Markdown?
Yes. Most Markdown parsers allow inline HTML for features Markdown doesn't support natively (like colored text, centered content, or complex tables). However, some platforms (like GitHub comments) restrict certain HTML tags for security.
How do I add images to my Markdown?
Use . For GitHub READMEs, you can drag-and-drop images directly into the editor, or reference images in your repo: . For external images, use the full URL.
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