NetworkSpeed

A lightweight, browser-based internet speed test application built with Node.js and Express

Live Demo • Repository

🚀 Overview

NetworkSpeed is a simple yet effective web-based speed test tool that measures your internet download speed directly from your browser. No installations, no plugins—just open the link and test your connection instantly.

✨ Features

• 🌐 Browser-based - Works on any device with a web browser
• ⚡ No Installation - Run instantly without setup
• 📊 Real-time Results - Get download speed in Mbps instantly
• 💾 Lightweight - Uses a fixed 10MB test file for accurate measurements
• 🔧 Simple Architecture - Easy to understand and modify
• 🚀 Easy Deployment - Deploy on Render, Railway, Vercel, or any Node host

🛠️ Tech Stack

Component	Technology
Backend	Node.js, Express
Frontend	HTML5, CSS3, Vanilla JavaScript
Test File	Binary file (10MB.bin)
Hosting	Render (Demo)

📁 Project Structure

networkspeed/
├── index.html          # Main UI template
├── style.css           # Styling for the speed test UI
├── speedtest.js        # Client-side speed test logic
├── server.js           # Express server configuration
├── 10MB.bin            # Test file for download speed measurement
├── package.json        # Node.js dependencies
├── package-lock.json   # Dependency lock file
└── README.md           # This file

🔍 How It Works

1. User clicks "Start Test" → Browser initiates a download request
2. Download begins → JavaScript records the start timestamp
3. File transfers → Browser downloads 10MB.bin from the server
4. Download completes → JavaScript records the end timestamp
5. Speed calculation → App calculates: (File Size in Mb) / (Time in seconds) = Mbps
6. Results displayed → Download speed is shown to the user

Speed Calculation Formula

Download Speed (Mbps) = (File Size: 10 MB × 8 bits/byte) / Download Time (seconds)

🚀 Getting Started

Prerequisites

• Node.js (v14+)
• npm or yarn

Installation

1. Clone the repository:

   git clone https://github.com/Sachin23991/networkspeed.git
   cd networkspeed

2. Install dependencies:

   npm install

3. Start the server:

   npm start

   Or for development with auto-reload:

   npm run dev

4. Open in browser:

   http://localhost:3000
   

📋 API Endpoints

GET /10MB.bin

Returns the 10MB test file for speed testing

• Response: Binary file (10MB)
• Content-Type: application/octet-stream

GET /

Serves the main index.html page

• Response: HTML page
• Content-Type: text/html

⚙️ Configuration

Environment Variables

Create a .env file if needed:

PORT=3000
NODE_ENV=development

Customization

Modify the test file size in speedtest.js:

const TEST_FILE_SIZE = 10; // in MB

📊 Important Notes

• Accuracy: Speed test accuracy depends on:

  • Your network conditions
  • Server location and availability
  • Server load during testing
  • Browser caching behavior

• Browser Compatibility: Works on all modern browsers (Chrome, Firefox, Safari, Edge)

• Mobile Testing: Fully responsive and works on mobile devices

🌐 Deployment

Deploy to Render

1. Push your code to GitHub
2. Connect your GitHub repo to Render
3. Set build command: npm install
4. Set start command: npm start
5. Deploy!

Deploy to Railway

railway link
railway up

Deploy to Vercel

Note: Vercel's serverless functions have execution limits. For larger files, consider Render or Railway.

🔐 Privacy & Security

• No data collection or analytics
• Speed test results are calculated locally in your browser
• No user information is stored or transmitted
• No cookies or tracking

📝 License

This project is open source and available under the MIT License.

🤝 Contributing

Contributions are welcome! Feel free to:

• Report bugs
• Suggest improvements
• Submit pull requests
• Share feature ideas

💡 Future Improvements

• Upload speed testing
• Ping/latency measurement
• Multiple server locations
• Speed test history
• Comparison with ISP speeds
• Network stability analysis
• Dark mode toggle

📧 Contact

For questions or feedback, reach out on GitHub: Sachin23991

---

Made with ❤️ by Sachin