Markdown Previewer

Live-render Markdown to HTML side by side.

Overview

Renders CommonMark and GitHub Flavored Markdown (GFM) into clean, sanitized HTML in real time with live side-by-side preview.

Formula & Calculation Method

Rendered_HTML = Sanitize(CommonMark_Parser(Markdown_Source))

Parses headers, bold/italics, bullet lists, blockquotes, code blocks, tables, and hyperlinks conforming to GFM specifications.

Worked Example: Previewing a GitHub README Section

Inputs: # Project Title **Bold text**, *italics*, and `inline code`. - Feature 1 - Feature 2

  • Parse heading tokens (# into <h1>).
  • Convert inline styling markers (** into <strong>, ` into <code>).
  • Render unordered list items (- into <ul><li>).

Summary: CommonMark Validated | Live HTML Preview Generated | Instant Copy Export

Common Use Cases

  • README Documentation: Draft and proofread project README.md files before committing to GitHub or GitLab.
  • Technical Blogging: Write markdown articles for static site generators like Jekyll, Hugo, Astro, and Next.js.
  • Note Taking: Formulate structured technical notes with clean code blocks and checklist tasks.

Frequently Asked Questions

What is GitHub Flavored Markdown (GFM)?

A strict extension of CommonMark that adds support for tables, task checklists, strikethrough text, and autolinks.

How do I create a table in Markdown?

Use pipes (|) to separate columns and hyphens (-) to define header rows (e.g. | Col 1 | Col 2 |\n|---|---|).

Can I use raw HTML inside Markdown?

Yes, standard Markdown parsers allow raw HTML tags for advanced formatting, unless explicitly disabled for security.

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