⚡ SnapSum
← Back to Blog
Development3 min read

Markdown Preview: Write and Preview Markdown in Real Time

Markdown is the standard format for documentation, README files, blog posts, and technical writing. A live Markdown preview lets you see how your formatted text will look as you type, without committing and pushing to a repository.

What Is Markdown?

Markdown is a lightweight markup language that uses plain text formatting syntax. It was created by John Gruber in 2004 and has become the default format on GitHub, GitLab, Stack Overflow, Reddit, and most documentation platforms.

Common Markdown Syntax

  • Headings - # H1, ## H2, ### H3
  • Bold - **bold text** or __bold text__
  • Italic - *italic text* or _italic text_
  • Links - [link text](https://example.com)
  • Images - ![alt text](image.png)
  • Code - `inline code` or ```code blocks```
  • Lists - - unordered or 1. ordered
  • Blockquotes - > quoted text
  • Tables - pipe-delimited rows with header separators

When to Use a Markdown Preview

  • Writing README files - preview before pushing to GitHub
  • Blog authoring - many static site generators use Markdown
  • Documentation - technical docs for APIs, libraries, and tools
  • Note-taking - Markdown is the format for Obsidian, Notion exports, and Joplin
  • Email drafts - write in Markdown, then convert to HTML with Markdown to HTML

Markdown Flavors

Not all Markdown parsers are the same:

  • CommonMark - the standardized specification. Most tools follow this.
  • GitHub Flavored Markdown (GFM) - adds tables, task lists, strikethrough, and autolinks.
  • MDX - Markdown + JSX components. Used in Next.js and React documentation.

The SnapSum Markdown Preview renders GFM-compatible Markdown, which covers the syntax most developers use daily.

Frequently Asked Questions

Can I export Markdown to HTML?

Yes. Use the Markdown to HTML tool to convert your Markdown content into clean HTML ready for web publishing.

Does the preview support LaTeX math?

Standard Markdown does not include LaTeX support. If you need math rendering, consider tools that integrate KaTeX or MathJax. The SnapSum preview focuses on standard GFM Markdown.