QRBeam ⚡

Drag. Drop. Scan. Done.

QRBeam is a zero-friction file sharing tool built for the moments when you just need to move a file — fast. No login, no app, no pairing. Upload a file, get a QR code, scan it on your phone, and it's yours. The file deletes itself in 10 minutes.

Live Demo: https://qrbeamx.netlify.app/

Features at a Glance

⚡ Instant Sharing - Share files instantly with a QR code
🔐 No Login Required - Zero friction, zero accounts
📱 Mobile Friendly - Scan QR code on your phone
⏰ Auto Delete - Files self-destruct after 10 minutes
🎯 Simple & Fast - Upload, share, download - done!The Problem

Working on a college computer and needed the file on your phone?

Logging into Gmail on a public system? Risky.
WhatsApp Web? Also risky.
Bluetooth? Pairing, waiting, praying…
Random apps? They all want a login or an install. Too much effort for a 15kb file.

QRBeam removes all of it.

QR Code Transfer — upload a file, scan the QR on your phone, done
6-Digit Code — alternative if you can't scan (just type the code)
No Login — not now, not ever
No App Download — works in any browser
Auto Delete — files expire and are purged from storage after 10 minutes
Up to 10 MB — handles most everyday files

No Database — session state lives in-memory; nothing persists

How It Works

User uploads file
      │
      ▼
Backend receives file → uploads to Azure Blob Storage
      │
      ├── Generates a unique 6-digit code
      ├── Schedules auto-delete after 10 minutes
      └── Returns QR code + code to frontend
                        │
                        ▼
            Receiver scans QR or enters code
                        │
                        ▼
              File streams directly from Azure
                        │
                        ▼
              Timer fires → blob deleted

No data is stored beyond the 10-minute window. No accounts. No tracking.

Project Structure

qrbeam/
├── frontend/                  # React app
└── backend/
    ├── server.js              # Entry point — boots Azure + starts server
    ├── .env.example           # Environment variable template
    ├── .gitignore
    ├── package.json
    └── src/
        ├── app.js             # Express app (middleware + routes)
        ├── config/
        │   └── azure.js       # Azure Blob client + container init
        ├── constants/
        │   └── index.js       # File limits, expiry, code config
        ├── controllers/
        │   └── fileController.js   # Route handler logic
        ├── middlewares/
        │   └── upload.js      # Multer configuration
        ├── routes/
        │   └── fileRoutes.js  # Express router
        └── services/
            ├── azureService.js    # Blob upload / download / delete
            ├── qrService.js       # QR code generation
            └── sessionService.js  # In-memory session store + expiry