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Markdown Viewer

About

Built for the way you actually write Markdown

Markdown Viewer is a free, open source Markdown editor with a live preview. It started as a way to share Markdown with collaborators without forcing them to install yet another desktop app — and grew into a full set of writer-friendly tools.

Principles

  • Fast. The home page ships under 80 KB of JavaScript. The editor lazy-loads only what it needs.
  • Private. Drafts live in your browser. We don't run analytics on your content, we don't sell ads, and there's nothing to log into.
  • Open. The codebase is MIT licensed. Fork it, embed it, or use it as a reference for your own Next.js app.
  • Accessible. Keyboard-first workflow, semantic HTML, color contrast that passes WCAG AA in both themes.

Tech stack

  • Next.js (App Router) with TypeScript
  • Tailwind CSS and shadcn/ui
  • react-markdown, remark-gfm, rehype-highlight, rehype-sanitize
  • framer-motion for tasteful animations

Get involved

Found a bug, want a feature, or have a suggestion? Open an issue or pull request on GitHub. We're a small team — community feedback shapes the roadmap.

Open the editor