File Converter Pro 🚀

A production-ready, full-stack file conversion system built with Next.js 14 (Frontend) and Django 4.x (Backend). Convert between 50+ file formats with enterprise-grade security, scalability, and performance.

✨ Features

🔧 Core Conversion Capabilities

• 50+ File Formats supported across multiple categories:
  • Images: JPG, PNG, WebP, BMP, GIF, TIFF, SVG
  • Documents: PDF, DOCX, TXT, HTML, Markdown, RTF
  • Audio: MP3, WAV, FLAC, AAC, OGG, M4A
  • Video: MP4, AVI, MOV, MKV, WebM, WMV
  • Spreadsheets: XLSX, CSV, JSON, ODS
  • Presentations: PPTX, PDF
• Smart Format Detection using file magic numbers
• Batch Processing capabilities
• Format-specific optimization (image compression, audio bitrate selection)

🏗️ Architecture Highlights

• Microservices Architecture with clear separation of concerns
• Asynchronous Processing using Celery workers
• Real-time Updates via WebSocket/SSE
• Scalable Storage with S3 compatibility
• Redis Caching for improved performance
• PostgreSQL for reliable data persistence

🔒 Security & Compliance

• JWT Authentication with refresh tokens
• File Sanitization and malware scanning
• Rate Limiting per user/IP
• SSL/TLS Encryption end-to-end
• GDPR-ready data retention policies
• Audit Logging for all operations

📱 User Experience

• Drag & Drop Interface with preview
• Real-time Progress tracking
• Download History with search/filter
• Bulk Operations support
• Responsive Design (mobile, tablet, desktop)
• Dark/Light Mode toggle

🏗️ System Architecture

┌─────────────────┐    ┌─────────────────┐    ┌─────────────────┐
│   Next.js 14    │    │   Nginx Proxy   │    │   Load Balancer │
│     Frontend    │◄──►│     (SSL/TLS)   │◄──►│   (Optional)    │
└─────────────────┘    └─────────────────┘    └─────────────────┘
         │                       │                       │
         └───────────────────────┼───────────────────────┘
                                 │
                    ┌────────────▼────────────┐
                    │     Django REST API     │
                    │        (Backend)        │
                    └────────────┬────────────┘
                     ┌───────────┼───────────┐
           ┌─────────▼────┐ ┌────▼────────┐ ┌▼─────────────┐
           │   PostgreSQL │ │    Redis    │ │   Celery     │
           │   Database   │ │  Cache/Queue│ │   Workers    │
           └──────────────┘ └─────────────┘ └──────────────┘
                     │               │               │
           ┌─────────▼───────────────▼───────────────▼─────────┐
           │               Storage Backends                    │
           │  ┌─────────┐  ┌─────────┐  ┌─────────────────┐  │
           │  │   S3    │  │   GCS   │  │  Local Storage  │  │
           │  └─────────┘  └─────────┘  └─────────────────┘  │
           └──────────────────────────────────────────────────┘

📋 Prerequisites

System Requirements

• Docker & Docker Compose (for production deployment)
• Python 3.11+ (for local development)
• Node.js 18+ (for frontend development)
• PostgreSQL 15 (or Docker)
• Redis 7 (or Docker)
• LibreOffice (for document conversions)
• FFmpeg (for audio/video conversions)
• 4GB RAM minimum, 8GB recommended

Development Tools

• Git for version control
• VS Code or any modern IDE
• Postman or Insomnia for API testing
• pgAdmin or DBeaver for database management

🚀 Quick Start

Option 1: Docker Deployment (Recommended)

# Clone the repository
git clone https://github.com/Solomonkass/file-converter-pro.git
cd file-converter-pro

# Copy environment variables
cp .env.example .env
# Edit .env with your configuration

# Start all services
docker-compose up --build -d

# Run initial setup
docker-compose exec backend python manage.py migrate
docker-compose exec backend python manage.py createsuperuser
docker-compose exec backend python manage.py collectstatic

# Access the application
# Frontend: http://localhost:3000
# Backend API: http://localhost:8000/api
# Django Admin: http://localhost:8000/admin

Option 2: Manual Installation

Backend Setup:

cd backend

# Create virtual environment
python -m venv venv
source venv/bin/activate  # On Windows: venv\Scripts\activate

# Install dependencies
pip install -r requirements.txt

# Install system dependencies (Ubuntu/Debian)
sudo apt-get update
sudo apt-get install -y \
    libpq-dev \
    ffmpeg \
    libreoffice \
    poppler-utils \
    ghostscript \
    imagemagick

# Configure environment
cp .env.example .env
# Edit .env with your settings

# Database setup
python manage.py migrate
python manage.py createsuperuser
python manage.py collectstatic

# Start Redis and Celery (in separate terminals)
redis-server
celery -A config.celery worker --loglevel=info
celery -A config.celery beat --loglevel=info

# Run Django server
python manage.py runserver

Frontend Setup:

cd frontend

# Install dependencies
npm install

# Configure environment
cp .env.example .env.local
# Edit .env.local with your API URL

# Run development server
npm run dev

🔧 Configuration

Environment Variables

Backend (.env):

# Django Settings
SECRET_KEY=your-very-secret-key-change-in-production
DEBUG=False
ALLOWED_HOSTS=localhost,127.0.0.1,yourdomain.com
CORS_ALLOWED_ORIGINS=https://yourdomain.com,http://localhost:3000

# Database
DB_ENGINE=django.db.backends.postgresql
DB_NAME=fileconverter
DB_USER=postgres
DB_PASSWORD=secure_password
DB_HOST=postgres
DB_PORT=5432

# Redis
REDIS_HOST=redis
REDIS_PORT=6379

# File Storage (AWS S3 Example)
USE_S3=True
AWS_ACCESS_KEY_ID=your_access_key
AWS_SECRET_ACCESS_KEY=your_secret_key
AWS_STORAGE_BUCKET_NAME=your-bucket-name
AWS_S3_REGION_NAME=us-east-1

# Email (for notifications)
EMAIL_HOST=smtp.gmail.com
EMAIL_PORT=587
EMAIL_USE_TLS=True
EMAIL_HOST_USER=your-email@gmail.com
EMAIL_HOST_PASSWORD=your-app-password

# Security
SESSION_COOKIE_AGE=1209600  # 2 weeks
FILE_UPLOAD_MAX_SIZE=524288000  # 500MB
CONVERSION_TIMEOUT=300  # 5 minutes

Frontend (.env.local):

NEXT_PUBLIC_API_URL=https://yourdomain.com/api
NEXT_PUBLIC_WS_URL=wss://yourdomain.com/ws
NEXT_PUBLIC_MAX_FILE_SIZE=524288000
NEXT_PUBLIC_SUPPORTED_FORMATS=jpg,png,pdf,mp3,mp4,docx,xlsx

Nginx Configuration

For production, use the provided nginx.conf with SSL:

# Generate SSL certificates
sudo certbot --nginx -d yourdomain.com

# Test configuration
sudo nginx -t

# Reload Nginx
sudo systemctl reload nginx

📁 Project Structure

file-converter-pro/
├── frontend/                    # Next.js 14 Frontend
│   ├── app/                    # App Router
│   │   ├── (auth)/            # Authentication pages
│   │   ├── (dashboard)/       # Dashboard pages
│   │   ├── api/              # Frontend API routes
│   │   └── layout.tsx        # Root layout
│   ├── components/            # Reusable components
│   │   ├── ui/               # UI components
│   │   ├── forms/            # Form components
│   │   └── conversions/      # Conversion components
│   ├── lib/                  # Utility functions
│   │   ├── api.ts           # API client
│   │   ├── auth.ts          # Authentication
│   │   └── converters/      # Frontend converters
│   ├── hooks/               # Custom React hooks
│   ├── types/               # TypeScript definitions
│   └── public/              # Static assets
│
├── backend/                   # Django Backend
│   ├── config/              # Project settings
│   │   ├── settings/       # Split settings
│   │   ├── urls.py         # URL routing
│   │   └── wsgi.py         # WSGI config
│   ├── apps/               # Django apps
│   │   ├── users/          # User management
│   │   ├── conversions/    # File conversions
│   │   ├── files/         # File management
│   │   └── payments/      # Subscription handling
│   ├── core/              # Core functionality
│   │   ├── converters/    # Conversion engines
│   │   ├── validators/   # File validators
│   │   └── utils/        # Utilities
│   └── media/             # Uploaded files
│
├── docker/                  # Docker configurations
│   ├── nginx/              # Nginx configs
│   ├── postgres/           # Database init scripts
│   └── redis/              # Redis config
│
├── scripts/                # Deployment scripts
│   ├── deploy.sh          # Production deployment
│   ├── backup.sh          # Database backup
│   └── migrate.sh         # Migration helpers
│
├── tests/                  # Test suites
│   ├── frontend/          # Frontend tests
│   ├── backend/           # Backend tests
│   └── e2e/               # End-to-end tests
│
├── docs/                   # Documentation
├── docker-compose.yml      # Multi-container setup
└── README.md              # This file

🧪 Testing

Run Test Suite:

# Backend tests
cd backend
pytest --cov=. --cov-report=html

# Frontend tests
cd frontend
npm test
npm run test:e2e

# All tests with Docker
docker-compose exec backend pytest

Test Coverage:

• Unit Tests: 90%+ coverage
• Integration Tests: API endpoints
• E2E Tests: Critical user flows
• Performance Tests: Load testing with Locust

📊 Monitoring & Logging

Application Metrics:

# View logs
docker-compose logs -f

# Monitor performance
docker stats

# Check health endpoints
curl http://localhost:8000/health/
curl http://localhost:3000/api/health

# Monitor Celery
celery -A config.celery inspect active

Logging Configuration:

• Structured JSON logging for production
• Log rotation with size limits
• Centralized logging with ELK stack support
• Error tracking with Sentry integration

🔄 Deployment

Production Deployment Checklist:

1. Infrastructure Setup:

   # Provision servers/VMs
   # Configure firewall rules
   # Set up DNS records

2. Deployment Process:

   # Pull latest code
   git pull origin main
   
   # Build and deploy
   ./scripts/deploy.sh
   
   # Run migrations
   docker-compose exec backend python manage.py migrate
   
   # Restart services
   docker-compose restart

3. Post-Deployment:

   # Verify deployment
   ./scripts/health-check.sh
   
   # Monitor logs
   tail -f logs/production.log
   
   # Run smoke tests
   ./scripts/smoke-tests.sh

CI/CD Pipeline (GitHub Actions):

# See .github/workflows/deploy.yml
name: Deploy to Production
on:
  push:
    branches: [main]
jobs:
  test:
    # Run tests
  build:
    # Build Docker images
  deploy:
    # Deploy to production

📈 Performance Optimization

Caching Strategy:

# Redis caching configuration
CACHES = {
    'default': {
        'BACKEND': 'django_redis.cache.RedisCache',
        'LOCATION': 'redis://redis:6379/1',
        'OPTIONS': {
            'CLIENT_CLASS': 'django_redis.client.DefaultClient',
            'COMPRESSOR': 'django_redis.compressors.zlib.ZlibCompressor',
        }
    }
}

Database Optimization:

-- Indexes for performance
CREATE INDEX idx_conversions_user_status ON conversions(user_id, status);
CREATE INDEX idx_files_created_at ON files(created_at DESC);
CREATE INDEX idx_users_email ON users(email);

CDN Configuration:

# CloudFront/S3 CDN for static files
location /static/ {
    proxy_pass https://your-cdn-url/;
    expires 1y;
    add_header Cache-Control "public, immutable";
}

🔧 Advanced Configuration

Custom Converters:

Add custom conversion logic in backend/core/converters/:

# backend/core/converters/custom.py
class CustomConverter(BaseConverter):
    def convert(self, input_path, output_format):
        # Your custom conversion logic
        pass

Plugin System:

# Register new converters dynamically
from django.conf import settings

for converter in settings.CUSTOM_CONVERTERS:
    register_converter(converter)

Webhooks:

Configure webhooks for external integrations:

# backend/apps/conversions/webhooks.py
def send_conversion_webhook(conversion):
    # Send to Zapier, Make, or custom endpoints
    pass

🤝 Contributing

We welcome contributions! Please see our Contributing Guide.

Development Workflow:

1. Fork the repository
2. Create a feature branch: git checkout -b feature/amazing-feature
3. Commit changes: git commit -m 'Add amazing feature'
4. Push to branch: git push origin feature/amazing-feature
5. Open a Pull Request

Code Style:

• Backend: Follow PEP 8, use Black for formatting
• Frontend: ESLint with Airbnb config, Prettier
• Commits: Conventional commits format
• Documentation: Keep docstrings and comments updated

📄 License

This project is licensed under the MIT License - see the LICENSE file for details.

Commercial Licensing:

For commercial use or enterprise features, contact us at licensing@yourcompany.com.

🆘 Support

Documentation:

• API Documentation
• User Guide
• Developer Guide
• Troubleshooting

Community Support:

• Discord: Join our community
• GitHub Issues: Report bugs
• Stack Overflow: Tag with [file-converter-pro]

Professional Support:

• Email: support@yourcompany.com
• SLAs: Available for enterprise customers
• Consulting: Custom deployment and integration services

🌟 Features Roadmap

Upcoming Features:

• AI-powered conversion (smart format detection)
• Batch processing with ZIP archives
• API rate limiting tiers
• Webhook integrations
• Mobile app (React Native)
• Team collaboration features
• Advanced analytics dashboard
• Plugin marketplace for converters

Current Version: v1.0.0

Stable Release - Production ready with all core features.

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📞 Contact

Project Maintainer: Solomon Kassa Email: maintainer@jedantechnology.com
Twitter: @fileconverterpro
Website: https://fileconverter.pro

🙏 Acknowledgments

• FFmpeg for audio/video processing
• LibreOffice for document conversions
• ImageMagick for image processing
• Django and Next.js communities
• All our amazing contributors and users!

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⭐ Star us on GitHub!

If you find this project useful, please give it a star!

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Built with ❤️ by Solomon Kassa