High-SpeedShare is a zero-dependency, fully offline LAN file sharing system.
Drop files. Scan a QR. Done. No internet. No cloud. No accounts.

---

📸 Screenshots

🖥️ File Sharing Dashboard

📡 Host Console — Generate Connection

  

🔐 Receiver Login & File Manager

  

---

✨ Features

🔒 Security First OTP-protected access — 4-digit code, session-scoped QR auto-login — scan once, instantly authenticated Brute-force protection — IP lockout after 5 attempts CSV XSS sanitization — safe file previews Path traversal prevention — is_safe_path() on every op	⚡ Speed & UX Chunked resumable uploads — pause, resume, no re-upload Drag & drop — files and entire folder trees Live progress bars — real-time per-file Private folders — each session gets isolated storage Auto browser open — double-click and it just works
📡 Truly Offline Zero internet required — air-gapped LAN compatible QR generated locally — no Google Charts, no CDN No cloud, no accounts — pure LAN peer-to-peer Works on any device — mobile browser, tablet, laptop	🎨 Modern UI Dark glassmorphism design — premium feel File previews — images, video, audio, PDF, CSV, code Responsive layout — works on 320px to 4K Real-time file list — auto-refreshes on upload complete

---

🚀 Quick Start

Option 1 — Single Executable (no Python needed)

# Linux / macOS (make it executable first)
chmod +x High-SpeedShare*
./High-SpeedShare*

# Windows
High-SpeedShare.exe

Browser opens automatically at http://localhost:8000/host

Option 2 — Run from Source

# Install dependencies
pip install -r requirements.txt

# Run
python3 fileshare.py

---

📖 How It Works

┌─────────────────────────────────────────────────────────────┐
│                                                             │
│   SENDER (Host)                  RECEIVER                  │
│   ──────────────                 ────────                  │
│                                                             │
│   1. Run High-SpeedShare         3. Scan QR code           │
│   2. Click "Generate Connection"    (or visit URL)         │
│      → QR code + OTP appears     4. Auto-logged in!        │
│                                  5. Upload / Download files │
│                                                             │
│   ◉  All traffic stays on your Local Area Network          │
│   ◉  No data ever touches the internet                     │
│   ◉  OTP expires when server restarts                      │
│                                                             │
└─────────────────────────────────────────────────────────────┘

---

📦 Build Executable from Source

# Install build tool
pip install pyinstaller qrcode[pil]

# Build — Linux / macOS
pyinstaller --onefile --name "High-SpeedShare" \
  --hidden-import qrcode \
  --hidden-import qrcode.image.pil \
  --hidden-import PIL \
  fileshare.py

# Output: dist/High-SpeedShare  (or .exe on Windows)

Automated builds for Linux, Windows, and macOS run via GitHub Actions on every release — check the Releases page.

---

🛡️ Security Model

Threat	Mitigation
OTP brute-force	IP lockout after 5 attempts — 5 min cooldown
XSS via CSV	All cell content HTML-escaped before render
Directory traversal	is_safe_path() validation on every file operation
External dependencies	QR generated locally — zero outbound network calls
Session fixation	UUID v4 session IDs, 24h TTL
Slowloris / slow clients	60s socket timeout on all connections

---

📋 Requirements

	Requirement
Python	3.8 or higher
Dependency	qrcode[pil] (only when running from source)
Executable	Zero dependencies — fully self-contained

---

🗂️ Project Structure

High-SpeedShare/
├── fileshare.py              # Entire app — single Python file
├── public/                   # README screenshots
│   ├── high-speedshare.png
│   ├── high-speedshare1.png
│   ├── generateconnection.png
│   ├── qrlogin.png
│   └── receiverlogin.png
├── .github/
│   └── workflows/
│       └── build.yml         # Auto-build for all platforms on release
├── README.md
└── LICENSE

---

🤝 Contributing

1. Fork the repo
2. Create a feature branch: git checkout -b feat/your-feature
3. Commit with context: feat(upload): add folder zip support
4. Push and open a Pull Request

---

📄 License

License © Karthigaiselvam R
See LICENSE for full terms.

---

Built with ❤️ for offline-first, privacy-respecting file sharing