sendmd

Drop a markdown file, paste, or start typing — get a shareable link in seconds.

Features

• Live preview — side-by-side editor with instant markdown rendering
• Formatting toolbar + shortcuts — CMD+B, CMD+I, CMD+K, headings, lists, code, and more
• Drag & drop — drop .md or .txt files straight into the editor
• Share links — one-click shareable URLs with configurable expiry (1h, 24h, 7d, 30d)
• Export — download as .md, .txt, or .pdf
• Reading mode — distraction-free full-width view
• Dark mode — system-aware with manual toggle
• Draft persistence — survives refresh and tabs via session/local storage

Tech Stack

Layer	Stack
Frontend	Next.js 14, React 18, Tailwind CSS, react-markdown, remark-gfm
Backend	Express, PostgreSQL, AWS S3 (R2)
Monorepo	pnpm workspaces, TypeScript

Getting Started

pnpm install

Environment

Create packages/backend/.env:

DATABASE_URL=postgres://...
BUCKET=your-bucket
AWS_ACCESS_KEY_ID=...
AWS_SECRET_ACCESS_KEY=...
AWS_ENDPOINT_URL=...
AWS_REGION=auto

Database

pnpm --filter @sendmd/backend migrate

Development

pnpm dev

Runs backend on :3001 and frontend on :3000 concurrently.

Build

pnpm build

Project Structure

packages/
  backend/     Express API — upload, retrieve, delete docs
  frontend/    Next.js app — editor, viewer, sharing
  shared/      TypeScript types shared across packages

Keyboard Shortcuts

Action	Shortcut
Bold	CMD+B
Italic	CMD+I
Inline code	CMD+E
Link	CMD+K
Strikethrough	CMD+Shift+X
Heading (cycle)	CMD+Shift+H
Blockquote	CMD+Shift+.
Unordered list	CMD+Shift+8
Ordered list	CMD+Shift+7
Open file	CMD+O
Paste	CMD+V

License

MIT