final app for testing and deployment

.env.production

@@ -0,0 +1,41 @@
+# QR Code Manager - Production Environment Configuration
+# Copy this file to .env and customize for your deployment
+
+# Flask Configuration
+FLASK_ENV=production
+SECRET_KEY=your-super-secret-key-change-this-in-production-please
+
+# Admin Credentials (CHANGE THESE BEFORE DEPLOYMENT!)
+ADMIN_USERNAME=admin # set your admin username
+ADMIN_PASSWORD=admin-password-here  # Set a strong password
+
+# Application Domain (for URL shortener)
+APP_DOMAIN=localhost:5000 # Change to your production domain, e.g., qr.[domain].com
+
+# Database (Future use)
+# DATABASE_URL=sqlite:///qr_manager.db
+
+# SSL/TLS Configuration (Uncomment for HTTPS)
+# SSL_KEYFILE=/path/to/your/private.key
+# SSL_CERTFILE=/path/to/your/certificate.crt
+
+# Logging Configuration
+LOG_LEVEL=INFO
+LOG_FILE=/app/logs/qr_manager.log
+
+# Security Settings
+SESSION_COOKIE_SECURE=false
+SESSION_COOKIE_HTTPONLY=true
+SESSION_COOKIE_SAMESITE=Lax
+
+# Performance Settings
+UPLOAD_MAX_SIZE=10485760  # 10MB in bytes
+CACHE_TIMEOUT=3600        # 1 hour in seconds
+
+# URL Shortener Settings
+SHORT_URL_LENGTH=6
+CUSTOM_DOMAIN_ENABLED=true # Enable custom domain for URL shortener and set APP_DOMAIN
+
+# Health Check Settings
+HEALTH_CHECK_ENABLED=true
+HEALTH_CHECK_INTERVAL=30

.env.sample

@@ -0,0 +1,19 @@
+# QR Code Manager Environment Configuration
+
+# Application Domain - Used for URL shortener functionality
+# Examples:
+# For development: APP_DOMAIN=localhost:5000
+# For production: APP_DOMAIN=qr.moto-adv.com
+# For production with HTTPS: APP_DOMAIN=https://qr.moto-adv.com
+APP_DOMAIN=localhost:5000
+
+# Flask Configuration
+FLASK_ENV=development
+SECRET_KEY=your-secret-key-change-in-production
+
+# Database Configuration (if using a database in the future)
+# DATABASE_URL=sqlite:///qr_manager.db
+
+# Admin Credentials (optional override)
+# ADMIN_USERNAME=admin
+# ADMIN_PASSWORD_HASH=$2b$12$...  # bcrypt hash of password

Dockerfile

@@ -23,10 +23,11 @@ RUN pip install --no-cache-dir -r requirements.txt
 
 # Copy application code
 COPY main.py .
+COPY gunicorn.conf.py .
 COPY app/ ./app/
 
 # Create necessary directories
-RUN mkdir -p app/static/qr_codes app/static/logos flask_session
+RUN mkdir -p app/static/qr_codes app/static/logos flask_session data
 
 # Set environment variables
 ENV FLASK_APP=main.py
@@ -45,5 +46,5 @@ EXPOSE 5000
 HEALTHCHECK --interval=30s --timeout=10s --start-period=5s --retries=3 \
     CMD python -c "import requests; requests.get('http://localhost:5000/health')" || exit 1
 
-# Run the application
-CMD ["python", "main.py"]
+# Run the application with Gunicorn for production
+CMD ["gunicorn", "-c", "gunicorn.conf.py", "main:app"]

README.md

@@ -6,9 +6,11 @@ A modern Flask web application for generating and managing QR codes with authent
 
 - **Multiple QR Code Types**: Text, URL, WiFi, Email, SMS, vCard
 - **Dynamic Link Pages**: Create collections of links accessible via QR codes
+- **URL Shortener**: Generate shortened URLs with custom domains and QR codes
 - **Admin Authentication**: Secure login with bcrypt password hashing
 - **Customizable Styling**: Different QR code styles (square, rounded, circle)
 - **Logo Integration**: Add custom logos to QR codes
+- **Click Tracking**: Monitor short URL usage and statistics
 - **Docker Deployment**: Production-ready containerization
 - **Responsive Design**: Modern web interface that works on all devices
 
@@ -43,6 +45,7 @@ qr-code_manager/
 │       ├── auth.py         # Authentication utilities
 │       ├── qr_generator.py # QR code generation
 │       ├── link_manager.py # Dynamic link management
+│       ├── url_shortener.py # URL shortening utilities
 │       └── data_manager.py # Data storage utilities
 ```
 
@@ -89,7 +92,180 @@ qr-code_manager/
    python main.py
    ```
 
-## 🔐 Authentication
+## <EFBFBD> Production vs Development Modes
+
+The QR Code Manager supports two distinct runtime modes with different behaviors and optimizations.
+
+### 🛠️ Development Mode (Default)
+
+**When it runs:**
+- When `FLASK_ENV` is not set to "production"
+- When running `python main.py` locally
+- Default mode for local development
+
+**Characteristics:**
+- Uses Flask's built-in development server
+- Debug mode enabled with auto-reload
+- Detailed error messages and stack traces
+- Console shows default login credentials
+- Not suitable for production use
+
+**How to run:**
+```bash
+# Method 1: Direct execution
+python main.py
+
+# Method 2: With explicit development environment
+FLASK_ENV=development python main.py
+
+# Method 3: Using environment file
+echo "FLASK_ENV=development" > .env
+python main.py
+```
+
+**Console output in development:**
+```
+🛠️  Starting QR Code Manager in DEVELOPMENT mode
+🔐 Admin user: admin
+🔑 Default password: admin123
+🌐 Domain configured: localhost:5000
+🔗 URL shortener available at: /s/
+ * Serving Flask app 'app'
+ * Debug mode: on
+ * Running on all addresses (0.0.0.0)
+ * Running on http://127.0.0.1:5000
+```
+
+### 🚀 Production Mode
+
+**When it runs:**
+- When `FLASK_ENV=production` is set
+- When deployed with Docker (automatic)
+- For live/production deployments
+
+**Characteristics:**
+- Uses Gunicorn WSGI server (4 workers)
+- Debug mode disabled
+- Optimized for performance and security
+- No default credentials shown
+- Production-grade error handling
+
+**How to run:**
+
+#### Option 1: Docker (Recommended)
+```bash
+# Copy and edit production environment
+cp .env.production .env
+# Edit .env with your production settings
+
+# Deploy with Docker
+docker-compose up -d
+```
+
+#### Option 2: Manual Gunicorn
+```bash
+# Set production environment
+export FLASK_ENV=production
+export SECRET_KEY=your-super-secret-key
+export ADMIN_USERNAME=your-admin-username
+export ADMIN_PASSWORD=your-secure-password
+export APP_DOMAIN=your-domain.com
+
+# Run with Gunicorn
+gunicorn -c gunicorn.conf.py main:app
+```
+
+#### Option 3: Environment File + Gunicorn
+```bash
+# Create production environment file
+cp .env.production .env
+
+# Edit .env with your settings:
+# FLASK_ENV=production
+# SECRET_KEY=your-super-secret-key
+# ADMIN_USERNAME=your-admin-username  
+# ADMIN_PASSWORD=your-secure-password
+# APP_DOMAIN=your-domain.com
+
+# Run with Gunicorn
+gunicorn -c gunicorn.conf.py main:app
+```
+
+**Console output in production:**
+```
+Admin user initialized: your-admin-username
+Default password: your-secure-password
+[2025-07-16 17:27:27 +0000] [1] [INFO] Starting gunicorn 21.2.0
+[2025-07-16 17:27:27 +0000] [1] [INFO] Listening at: http://0.0.0.0:5000 (1)
+[2025-07-16 17:27:27 +0000] [1] [INFO] Using worker: sync
+[2025-07-16 17:27:27 +0000] [7] [INFO] Booting worker with pid: 7
+[2025-07-16 17:27:27 +0000] [8] [INFO] Booting worker with pid: 8
+[2025-07-16 17:27:27 +0000] [9] [INFO] Booting worker with pid: 9
+[2025-07-16 17:27:27 +0000] [10] [INFO] Booting worker with pid: 10
+```
+
+### 🔧 Environment Configuration
+
+Create a `.env` file in the project root with your configuration:
+
+**For Development:**
+```bash
+# Development settings
+FLASK_ENV=development
+SECRET_KEY=dev-secret-key
+ADMIN_USERNAME=admin
+ADMIN_PASSWORD=admin123
+APP_DOMAIN=localhost:5000
+```
+
+**For Production:**
+```bash
+# Production settings (copy from .env.production and customize)
+FLASK_ENV=production
+SECRET_KEY=your-super-secret-key-change-this
+ADMIN_USERNAME=your-admin-username
+ADMIN_PASSWORD=your-secure-password
+APP_DOMAIN=your-domain.com
+
+# Security settings
+SESSION_COOKIE_SECURE=true  # Set to true for HTTPS
+SESSION_COOKIE_HTTPONLY=true
+SESSION_COOKIE_SAMESITE=Lax
+
+# Performance settings
+UPLOAD_MAX_SIZE=10485760  # 10MB
+CACHE_TIMEOUT=3600        # 1 hour
+```
+
+### 🛡️ Security Considerations
+
+**Development Mode:**
+- ⚠️ Never use in production
+- Default credentials are visible
+- Debug information exposed
+- Single-threaded server
+
+**Production Mode:**
+- ✅ Use Gunicorn WSGI server
+- ✅ Change default credentials
+- ✅ Use strong SECRET_KEY
+- ✅ Enable HTTPS when possible
+- ✅ Set secure cookie flags
+- ✅ Multiple worker processes
+
+### 📊 Performance Comparison
+
+| Feature | Development | Production |
+|---------|-------------|------------|
+| Server | Flask dev server | Gunicorn (4 workers) |
+| Performance | Basic | Optimized |
+| Concurrency | Single-threaded | Multi-worker |
+| Auto-reload | Yes | No |
+| Debug info | Full | Minimal |
+| Error handling | Verbose | Secure |
+| Session security | Basic | Enhanced |
+
+## <20>🔐 Authentication
 
 - **Default Credentials**: admin / admin123
 - **Environment Variables**:
@@ -114,6 +290,7 @@ The application is fully containerized with Docker:
    SECRET_KEY=your-super-secret-key-here
    ADMIN_USERNAME=your-admin-username
    ADMIN_PASSWORD=your-secure-password
+   APP_DOMAIN=qr.moto-adv.com  # Your custom domain for URL shortener
    ```
 
 2. **Deploy:**
@@ -121,6 +298,15 @@ The application is fully containerized with Docker:
    docker-compose up -d
    ```
 
+### URL Shortener Configuration
+
+The URL shortener feature uses the `APP_DOMAIN` environment variable to generate short URLs:
+
+- **Development**: `APP_DOMAIN=localhost:5000`
+- **Production**: `APP_DOMAIN=qr.moto-adv.com` or `APP_DOMAIN=https://qr.moto-adv.com`
+
+Short URLs will be available at: `https://[your-domain]/s/[short-code]`
+
 ## 📱 Usage
 
 ### Generating QR Codes
@@ -139,6 +325,18 @@ The application is fully containerized with Docker:
 3. **Share the QR code** that points to your link page
 4. **Update links anytime** without changing the QR code
 
+### URL Shortener
+
+1. **Create shortened URLs** with optional custom codes
+2. **Generate QR codes** for shortened URLs
+3. **Track clicks** and monitor usage statistics
+4. **Redirect seamlessly** from short URLs to original destinations
+5. **Integrate with link pages** by enabling shortener for individual links
+
+**Examples:**
+- Original: `https://very-long-domain.com/extremely/long/path/to/resource`
+- Short: `https://qr.moto-adv.com/s/abc123`
+
 ## 🛡️ Security Features
 
 - **Password Hashing**: Uses bcrypt for secure password storage
@@ -168,15 +366,28 @@ The application follows a modular Flask structure:
 
 ## 📊 API Endpoints
 
+### QR Code Management
 - `POST /api/generate` - Generate QR code
 - `GET /api/qr_codes` - List all QR codes
 - `GET /api/qr_codes/{id}` - Get specific QR code
 - `DELETE /api/qr_codes/{id}` - Delete QR code
+
+### Dynamic Link Pages
 - `POST /api/create_link_page` - Create dynamic link page
 - `POST /api/link_pages/{id}/links` - Add link to page
 - `PUT /api/link_pages/{id}/links/{link_id}` - Update link
 - `DELETE /api/link_pages/{id}/links/{link_id}` - Delete link
 
+### URL Shortener
+- `POST /api/shorten` - Create standalone short URL
+- `POST /api/generate_shortened_qr` - Generate QR code with short URL
+- `GET /api/short_urls` - List all short URLs
+- `GET /api/short_urls/{code}/stats` - Get short URL statistics
+- `GET /s/{code}` - Redirect short URL to original
+- `POST /api/link_pages/{id}/links` - Add link to page
+- `PUT /api/link_pages/{id}/links/{link_id}` - Update link
+- `DELETE /api/link_pages/{id}/links/{link_id}` - Delete link
+
 ## 🚨 Troubleshooting
 
 ### Common Issues
@@ -205,6 +416,55 @@ This project is licensed under the MIT License - see the LICENSE file for detail
 4. Add tests if applicable
 5. Submit a pull request
 
+## 🧹 Data Cleanup for Deployment
+
+When preparing for a fresh deployment or when you need to clear all data, use the provided cleanup scripts:
+
+### Option 1: Python Script (Recommended)
+
+```bash
+python clean_data.py
+```
+
+### Option 2: Shell Script (Quick)
+
+```bash
+./clean_data.sh
+```
+
+### What Gets Cleaned
+
+Both scripts will remove:
+
+- **All QR codes and their data** - Clears the QR codes database and deletes all generated PNG images
+- **All dynamic link pages** - Removes all link collections and their settings  
+- **All short URLs** - Clears the URL shortener database
+- **All Flask sessions** - Removes user session files
+- **All log files** - Deletes any application log files
+- **Python cache files** - Removes `__pycache__` directories and `.pyc` files
+
+### Safety Features
+
+- **Confirmation prompt** - Both scripts require typing 'YES' to confirm the action
+- **Directory preservation** - Required directories are recreated after cleanup
+- **Error handling** - Scripts handle missing files/directories gracefully
+
+### Post-Cleanup Steps
+
+After running the cleanup script:
+
+1. Start the application: `python main.py`
+2. Login with default credentials: `admin` / `admin123`  
+3. **Important**: Change the default admin password immediately
+4. Begin creating your QR codes and link pages
+
+### Use Cases
+
+- **Fresh deployment** - Clean slate for production deployment
+- **Development reset** - Clear test data during development
+- **Data migration** - Prepare for moving to a new system
+- **Security cleanup** - Remove all data when decommissioning
+
 ## 📞 Support
 
 For support, please open an issue on GitHub or contact the development team.

app/routes/api.py

@@ -7,7 +7,7 @@ import io
 import base64
 import uuid
 from datetime import datetime
-from flask import Blueprint, request, jsonify, send_file
+from flask import Blueprint, request, jsonify, send_file, redirect, Response, current_app
 from app.utils.auth import login_required
 from app.utils.qr_generator import QRCodeGenerator
 from app.utils.link_manager import LinkPageManager
@@ -20,9 +20,11 @@ qr_generator = QRCodeGenerator()
 link_manager = LinkPageManager()
 data_manager = QRDataManager()
 
-# Configuration for file uploads
-UPLOAD_FOLDER = 'app/static/qr_codes'
-LOGOS_FOLDER = 'app/static/logos'
+# Configuration for file uploads - use paths relative to app root
+UPLOAD_FOLDER = os.path.join(os.path.dirname(__file__), '..', 'static', 'qr_codes')
+LOGOS_FOLDER = os.path.join(os.path.dirname(__file__), '..', 'static', 'logos')
+UPLOAD_FOLDER = os.path.abspath(UPLOAD_FOLDER)
+LOGOS_FOLDER = os.path.abspath(LOGOS_FOLDER)
 os.makedirs(UPLOAD_FOLDER, exist_ok=True)
 os.makedirs(LOGOS_FOLDER, exist_ok=True)
 
@@ -107,7 +109,7 @@ END:VCARD"""
 @bp.route('/download/<qr_id>')
 @login_required
 def download_qr(qr_id):
-    """Download QR code"""
+    """Download QR code in PNG format"""
     try:
         img_path = os.path.join(UPLOAD_FOLDER, f'{qr_id}.png')
         if os.path.exists(img_path):
@@ -117,6 +119,32 @@ def download_qr(qr_id):
     except Exception as e:
         return jsonify({'error': str(e)}), 500
 
+@bp.route('/download/<qr_id>/svg')
+@login_required
+def download_qr_svg(qr_id):
+    """Download QR code in SVG format"""
+    try:
+        # Get QR code data from database
+        qr_data = data_manager.get_qr_code(qr_id)
+        if not qr_data:
+            return jsonify({'error': 'QR code not found'}), 404
+        
+        # Regenerate QR code as SVG
+        settings = qr_data.get('settings', {})
+        content = qr_data.get('content', '')
+        
+        # Generate SVG QR code
+        svg_string = qr_generator.generate_qr_code_svg_string(content, settings)
+        
+        # Create a response with SVG content
+        response = Response(svg_string, mimetype='image/svg+xml')
+        response.headers['Content-Disposition'] = f'attachment; filename=qr_code_{qr_id}.svg'
+        
+        return response
+        
+    except Exception as e:
+        return jsonify({'error': str(e)}), 500
+
 @bp.route('/qr_codes')
 @login_required
 def list_qr_codes():
@@ -195,8 +223,19 @@ def create_link_page():
         # Create the link page
         page_id = link_manager.create_link_page(title, description)
         
-        # Create QR code pointing to the link page
-        page_url = f"{request.url_root}links/{page_id}"
+        # Create the original page URL
+        original_page_url = f"{request.url_root}links/{page_id}"
+        
+        # Automatically create a short URL for the link page
+        short_result = link_manager.create_standalone_short_url(
+            original_page_url, 
+            title=f"Link Page: {title}",
+            custom_code=None
+        )
+        short_page_url = short_result['short_url']
+        
+        # Store the short URL info with the page
+        link_manager.set_page_short_url(page_id, short_page_url, short_result['short_code'])
         
         settings = {
             'size': data.get('size', 10),
@@ -206,8 +245,8 @@ def create_link_page():
             'style': data.get('style', 'square')
         }
         
-        # Generate QR code
-        qr_img = qr_generator.generate_qr_code(page_url, settings)
+        # Generate QR code pointing to the SHORT URL (not the original long URL)
+        qr_img = qr_generator.generate_qr_code(short_page_url, settings)
         
         # Convert to base64
         img_buffer = io.BytesIO()
@@ -215,8 +254,8 @@ def create_link_page():
         img_buffer.seek(0)
         img_base64 = base64.b64encode(img_buffer.getvalue()).decode()
         
-        # Save QR code record
-        qr_id = data_manager.save_qr_record('link_page', page_url, settings, img_base64, page_id)
+        # Save QR code record with the short URL
+        qr_id = data_manager.save_qr_record('link_page', short_page_url, settings, img_base64, page_id)
         
         # Save image file
         img_path = os.path.join(UPLOAD_FOLDER, f'{qr_id}.png')
@@ -226,7 +265,9 @@ def create_link_page():
             'success': True,
             'qr_id': qr_id,
             'page_id': page_id,
-            'page_url': page_url,
+            'page_url': short_page_url,  # Return the short URL as the main page URL
+            'original_url': original_page_url,  # Keep original for reference
+            'short_code': short_result['short_code'],
             'edit_url': f"{request.url_root}edit/{page_id}",
             'image_data': f'data:image/png;base64,{img_base64}',
             'download_url': f'/api/download/{qr_id}'
@@ -244,11 +285,17 @@ def add_link_to_page(page_id):
         title = data.get('title', '')
         url = data.get('url', '')
         description = data.get('description', '')
+        enable_shortener = data.get('enable_shortener', False)
+        custom_short_code = data.get('custom_short_code', None)
         
         if not title or not url:
             return jsonify({'error': 'Title and URL are required'}), 400
         
-        success = link_manager.add_link(page_id, title, url, description)
+        success = link_manager.add_link(
+            page_id, title, url, description, 
+            enable_shortener=enable_shortener, 
+            custom_short_code=custom_short_code
+        )
         
         if success:
             return jsonify({'success': True})
@@ -267,8 +314,14 @@ def update_link_in_page(page_id, link_id):
         title = data.get('title')
         url = data.get('url')
         description = data.get('description')
+        enable_shortener = data.get('enable_shortener')
+        custom_short_code = data.get('custom_short_code')
         
-        success = link_manager.update_link(page_id, link_id, title, url, description)
+        success = link_manager.update_link(
+            page_id, link_id, title, url, description, 
+            enable_shortener=enable_shortener, 
+            custom_short_code=custom_short_code
+        )
         
         if success:
             return jsonify({'success': True})
@@ -302,3 +355,108 @@ def get_link_page(page_id):
         return jsonify(page_data)
     else:
         return jsonify({'error': 'Page not found'}), 404
+
+# URL Shortener API Routes
+
+@bp.route('/shorten', methods=['POST'])
+@login_required
+def create_short_url():
+    """Create a shortened URL"""
+    try:
+        data = request.json
+        url = data.get('url', '')
+        title = data.get('title', '')
+        custom_code = data.get('custom_code', None)
+        
+        if not url:
+            return jsonify({'error': 'URL is required'}), 400
+        
+        result = link_manager.create_standalone_short_url(url, title, custom_code)
+        
+        return jsonify({
+            'success': True,
+            'short_url': result['short_url'],
+            'short_code': result['short_code'],
+            'original_url': result['original_url']
+        })
+        
+    except Exception as e:
+        return jsonify({'error': str(e)}), 500
+
+@bp.route('/short_urls')
+@login_required
+def list_short_urls():
+    """List all shortened URLs"""
+    try:
+        urls = link_manager.list_all_short_urls()
+        return jsonify({'success': True, 'urls': urls})
+    except Exception as e:
+        return jsonify({'error': str(e)}), 500
+
+@bp.route('/short_urls/<short_code>/stats')
+@login_required
+def get_short_url_stats(short_code):
+    """Get statistics for a short URL"""
+    try:
+        stats = link_manager.get_short_url_stats(short_code)
+        if stats:
+            return jsonify({'success': True, 'stats': stats})
+        else:
+            return jsonify({'error': 'Short URL not found'}), 404
+    except Exception as e:
+        return jsonify({'error': str(e)}), 500
+
+@bp.route('/generate_shortened_qr', methods=['POST'])
+@login_required
+def generate_shortened_qr():
+    """Generate QR code for a shortened URL"""
+    try:
+        data = request.json
+        shortener_data = data.get('shortener', {})
+        url = shortener_data.get('url', '')
+        title = shortener_data.get('title', '')
+        custom_code = shortener_data.get('custom_code', '').strip() or None
+        
+        if not url:
+            return jsonify({'error': 'URL is required'}), 400
+        
+        # Create shortened URL
+        result = link_manager.create_standalone_short_url(url, title, custom_code)
+        short_url = result['short_url']
+        
+        # Generate QR code for the short URL
+        settings = {
+            'size': data.get('size', 10),
+            'border': data.get('border', 4),
+            'foreground_color': data.get('foreground_color', '#000000'),
+            'background_color': data.get('background_color', '#FFFFFF'),
+            'style': data.get('style', 'square')
+        }
+        
+        qr_img = qr_generator.generate_qr_code(short_url, settings)
+        
+        # Convert to base64
+        img_buffer = io.BytesIO()
+        qr_img.save(img_buffer, format='PNG')
+        img_buffer.seek(0)
+        img_base64 = base64.b64encode(img_buffer.getvalue()).decode()
+        
+        # Save QR code record
+        qr_id = data_manager.save_qr_record('url_shortener', short_url, settings, img_base64)
+        
+        # Save image file
+        img_path = os.path.join(UPLOAD_FOLDER, f'{qr_id}.png')
+        qr_img.save(img_path)
+        
+        return jsonify({
+            'success': True,
+            'qr_id': qr_id,
+            'short_url': short_url,
+            'short_code': result['short_code'],
+            'original_url': result['original_url'],
+            'image_data': f'data:image/png;base64,{img_base64}',
+            'download_url': f'/api/download/{qr_id}'
+        })
+        
+    except Exception as e:
+        return jsonify({'error': str(e)}), 500

app/routes/main.py

@@ -2,7 +2,7 @@
 Main routes for QR Code Manager
 """
 
-from flask import Blueprint, render_template
+from flask import Blueprint, render_template, redirect, abort
 from app.utils.auth import login_required
 from app.utils.link_manager import LinkPageManager
 
@@ -44,3 +44,12 @@ def health_check():
     from datetime import datetime
     from flask import jsonify
     return jsonify({'status': 'healthy', 'timestamp': datetime.now().isoformat()})
+
+@bp.route('/s/<short_code>')
+def redirect_short_url(short_code):
+    """Redirect short URL to original URL"""
+    original_url = link_manager.resolve_short_url(short_code)
+    if original_url:
+        return redirect(original_url)
+    else:
+        abort(404)

app/templates/edit_links.html

@@ -141,12 +141,27 @@
             border-radius: 8px;
             padding: 20px;
             margin-bottom: 15px;
+            display: flex;
+            justify-content: space-between;
+            align-items: flex-start;
+            gap: 15px;
         }
 
         .link-item.editing {
             border-color: #667eea;
         }
 
+        .link-content {
+            flex: 1;
+        }
+
+        .link-logo {
+            width: 32px;
+            height: 32px;
+            border-radius: 6px;
+            flex-shrink: 0;
+        }
+
         .link-display {
             display: block;
         }
@@ -253,6 +268,13 @@
         <div class="header">
             <h1>✏️ Edit Links</h1>
             <p>Manage your link collection: {{ page.title }}</p>
+            {% if page.short_url %}
+            <div style="margin-top: 15px; padding: 12px; background: rgba(255,255,255,0.2); border-radius: 8px; font-size: 0.9em;">
+                <strong>🔗 Page Short URL:</strong> 
+                <a href="{{ page.short_url }}" target="_blank" style="color: #fff; text-decoration: underline;">{{ page.short_url }}</a>
+                <button onclick="copyToClipboard('{{ page.short_url }}')" style="margin-left: 10px; padding: 4px 8px; background: rgba(255,255,255,0.3); color: white; border: 1px solid rgba(255,255,255,0.5); border-radius: 3px; cursor: pointer; font-size: 0.8em;">Copy</button>
+            </div>
+            {% endif %}
         </div>
 
         <div class="alert alert-success" id="success-alert">
@@ -292,12 +314,21 @@
                     {% if page.links %}
                         {% for link in page.links %}
                         <div class="link-item" data-link-id="{{ link.id }}">
-                            <div class="link-display">
-                                <div class="link-title">{{ link.title }}</div>
-                                {% if link.description %}
-                                <div class="link-description">{{ link.description }}</div>
+                            <div class="link-content">
+                                <div class="link-display">
+                                    <div class="link-title">{{ link.title }}</div>
+                                    {% if link.description %}
+                                    <div class="link-description">{{ link.description }}</div>
+                                    {% endif %}
+                                    <div class="link-url" data-url="{{ link.url }}">{{ link.url }}</div>
+                                {% if link.short_url %}
+                                <div class="short-url-display" style="margin-top: 8px; padding: 8px; background: #e3f2fd; border-radius: 5px; border-left: 3px solid #2196f3;">
+                                    <small style="color: #1976d2; font-weight: 600;">🔗 Short URL:</small>
+                                    <br>
+                                    <a href="{{ link.short_url }}" target="_blank" style="color: #1976d2; text-decoration: none; font-family: monospace;">{{ link.short_url }}</a>
+                                    <button class="btn-copy" onclick="copyToClipboard('{{ link.short_url }}')" style="margin-left: 10px; padding: 2px 8px; background: #2196f3; color: white; border: none; border-radius: 3px; cursor: pointer; font-size: 0.8em;">Copy</button>
+                                </div>
                                 {% endif %}
-                                <div class="link-url">{{ link.url }}</div>
                                 <div class="link-actions">
                                     <button class="btn btn-small btn-secondary" onclick="editLink('{{ link.id }}')">Edit</button>
                                     <button class="btn btn-small btn-danger" onclick="deleteLink('{{ link.id }}')">Delete</button>
@@ -322,6 +353,7 @@
                                     <button class="btn btn-small btn-secondary" onclick="cancelEdit('{{ link.id }}')">Cancel</button>
                                 </div>
                             </div>
+                            <img class="link-logo" src="" alt="" style="display: none;" onerror="this.style.display='none'">
                         </div>
                         {% endfor %}
                     {% else %}
@@ -344,6 +376,87 @@
     <script>
         const pageId = '{{ page.id }}';
         
+        // Social media and website logo detection
+        function getWebsiteLogo(url) {
+            try {
+                const urlObj = new URL(url.startsWith('http') ? url : 'https://' + url);
+                const domain = urlObj.hostname.toLowerCase().replace('www.', '');
+                
+                // Logo mapping for popular sites
+                const logoMap = {
+                    'facebook.com': 'https://cdn.jsdelivr.net/npm/simple-icons@v9/icons/facebook.svg',
+                    'instagram.com': 'https://cdn.jsdelivr.net/npm/simple-icons@v9/icons/instagram.svg',
+                    'twitter.com': 'https://cdn.jsdelivr.net/npm/simple-icons@v9/icons/twitter.svg',
+                    'x.com': 'https://cdn.jsdelivr.net/npm/simple-icons@v9/icons/x.svg',
+                    'tiktok.com': 'https://cdn.jsdelivr.net/npm/simple-icons@v9/icons/tiktok.svg',
+                    'youtube.com': 'https://cdn.jsdelivr.net/npm/simple-icons@v9/icons/youtube.svg',
+                    'linkedin.com': 'https://cdn.jsdelivr.net/npm/simple-icons@v9/icons/linkedin.svg',
+                    'pinterest.com': 'https://cdn.jsdelivr.net/npm/simple-icons@v9/icons/pinterest.svg',
+                    'snapchat.com': 'https://cdn.jsdelivr.net/npm/simple-icons@v9/icons/snapchat.svg',
+                    'whatsapp.com': 'https://cdn.jsdelivr.net/npm/simple-icons@v9/icons/whatsapp.svg',
+                    'telegram.org': 'https://cdn.jsdelivr.net/npm/simple-icons@v9/icons/telegram.svg',
+                    'discord.com': 'https://cdn.jsdelivr.net/npm/simple-icons@v9/icons/discord.svg',
+                    'reddit.com': 'https://cdn.jsdelivr.net/npm/simple-icons@v9/icons/reddit.svg',
+                    'github.com': 'https://cdn.jsdelivr.net/npm/simple-icons@v9/icons/github.svg',
+                    'gmail.com': 'https://cdn.jsdelivr.net/npm/simple-icons@v9/icons/gmail.svg',
+                    'google.com': 'https://cdn.jsdelivr.net/npm/simple-icons@v9/icons/google.svg',
+                    'amazon.com': 'https://cdn.jsdelivr.net/npm/simple-icons@v9/icons/amazon.svg',
+                    'apple.com': 'https://cdn.jsdelivr.net/npm/simple-icons@v9/icons/apple.svg',
+                    'microsoft.com': 'https://cdn.jsdelivr.net/npm/simple-icons@v9/icons/microsoft.svg',
+                    'spotify.com': 'https://cdn.jsdelivr.net/npm/simple-icons@v9/icons/spotify.svg',
+                    'netflix.com': 'https://cdn.jsdelivr.net/npm/simple-icons@v9/icons/netflix.svg',
+                    'twitch.tv': 'https://cdn.jsdelivr.net/npm/simple-icons@v9/icons/twitch.svg',
+                    'dropbox.com': 'https://cdn.jsdelivr.net/npm/simple-icons@v9/icons/dropbox.svg',
+                    'zoom.us': 'https://cdn.jsdelivr.net/npm/simple-icons@v9/icons/zoom.svg'
+                };
+                
+                if (logoMap[domain]) {
+                    return logoMap[domain];
+                }
+                
+                // Fallback to favicon
+                return `https://www.google.com/s2/favicons?domain=${domain}&sz=64`;
+            } catch (e) {
+                return null;
+            }
+        }
+        
+        // Set logos for existing links
+        function setLogosForLinks() {
+            document.querySelectorAll('.link-url[data-url]').forEach(linkElement => {
+                const url = linkElement.getAttribute('data-url');
+                const logoImg = linkElement.closest('.link-item').querySelector('.link-logo');
+                const logoSrc = getWebsiteLogo(url);
+                
+                if (logoSrc && logoImg) {
+                    logoImg.src = logoSrc;
+                    logoImg.style.display = 'block';
+                    logoImg.alt = new URL(url.startsWith('http') ? url : 'https://' + url).hostname;
+                }
+            });
+        }
+        
+        // Initialize logos when page loads
+        document.addEventListener('DOMContentLoaded', setLogosForLinks);
+        
+        // Copy to clipboard function
+        function copyToClipboard(text) {
+            navigator.clipboard.writeText(text).then(function() {
+                // Show temporary success message
+                const btn = event.target;
+                const originalText = btn.textContent;
+                btn.textContent = 'Copied!';
+                btn.style.background = '#4caf50';
+                setTimeout(() => {
+                    btn.textContent = originalText;
+                    btn.style.background = '#2196f3';
+                }, 1500);
+            }).catch(function(err) {
+                console.error('Could not copy text: ', err);
+                alert('Failed to copy to clipboard');
+            });
+        }
+        
         // Add new link
         document.getElementById('add-link-form').addEventListener('submit', async function(e) {
             e.preventDefault();
@@ -358,7 +471,11 @@
                     headers: {
                         'Content-Type': 'application/json'
                     },
-                    body: JSON.stringify({ title, url, description })
+                    body: JSON.stringify({ 
+                        title, 
+                        url, 
+                        description
+                    })
                 });
                 
                 const result = await response.json();
@@ -399,7 +516,11 @@
                     headers: {
                         'Content-Type': 'application/json'
                     },
-                    body: JSON.stringify({ title, url, description })
+                    body: JSON.stringify({ 
+                        title, 
+                        url, 
+                        description
+                    })
                 });
                 
                 const result = await response.json();

app/templates/index.html

@@ -148,7 +148,8 @@
         .link-page-fields,
         .email-fields,
         .sms-fields,
-        .vcard-fields {
+        .vcard-fields,
+        .url-shortener-fields {
             display: none;
         }
 
@@ -156,7 +157,8 @@
         .link-page-fields.active,
         .email-fields.active,
         .sms-fields.active,
-        .vcard-fields.active {
+        .vcard-fields.active,
+        .url-shortener-fields.active {
             display: block;
         }
 
@@ -212,14 +214,9 @@
         }
 
         .download-section {
-            display: none;
             gap: 10px;
         }
 
-        .download-section.active {
-            display: flex;
-        }
-
         .btn-secondary {
             background: #6c757d;
             flex: 1;
@@ -230,6 +227,15 @@
             flex: 1;
         }
 
+        .btn-success {
+            background: linear-gradient(135deg, #28a745 0%, #20c997 100%);
+            flex: 1;
+        }
+
+        .btn-success:hover {
+            background: linear-gradient(135deg, #20c997 0%, #17a2b8 100%);
+        }
+
         .qr-history {
             margin-top: 30px;
             padding: 25px;
@@ -322,6 +328,7 @@
                         <option value="text">Text</option>
                         <option value="url">URL/Website</option>
                         <option value="link_page">Dynamic Link Page</option>
+                        <option value="url_shortener">URL Shortener</option>
                         <option value="wifi">WiFi</option>
                         <option value="email">Email</option>
                         <option value="phone">Phone</option>
@@ -368,7 +375,32 @@
                     </div>
                     <div class="form-group">
                         <p style="background: #e3f2fd; padding: 15px; border-radius: 8px; color: #1565c0; font-size: 0.9em;">
-                            <strong>💡 Dynamic Link Page:</strong> This creates a QR code that points to a web page where you can add, edit, and manage links. The QR code stays the same, but you can update the links anytime!
+                            <strong>💡 Dynamic Link Page with Short URL:</strong> This creates a QR code with a short URL that points to a web page where you can add, edit, and manage links. The QR code stays the same, but you can update the links anytime! 
+                            <br><br>✨ <strong>Auto Short URL:</strong> Your link page will automatically get a short URL like <code>qr.moto-adv.com/s/abc123</code> making the QR code simpler and easier to scan!
+                        </p>
+                    </div>
+                </div>
+
+                <!-- URL Shortener fields -->
+                <div class="url-shortener-fields" id="url-shortener-fields">
+                    <div class="form-group">
+                        <label for="shortener-url">URL to Shorten</label>
+                        <input type="url" id="shortener-url" placeholder="https://example.com/very/long/url">
+                    </div>
+                    <div class="form-group">
+                        <label for="shortener-title">Title (optional)</label>
+                        <input type="text" id="shortener-title" placeholder="My Website">
+                    </div>
+                    <div class="form-group">
+                        <label for="shortener-custom-code">Custom Short Code (optional)</label>
+                        <input type="text" id="shortener-custom-code" placeholder="mylink" maxlength="20">
+                        <small style="color: #666; font-size: 0.8em;">
+                            Leave empty for random code. Only letters and numbers allowed.
+                        </small>
+                    </div>
+                    <div class="form-group">
+                        <p style="background: #e3f2fd; padding: 15px; border-radius: 8px; color: #1565c0; font-size: 0.9em;">
+                            <strong>🔗 URL Shortener:</strong> Creates a short URL that redirects to your original URL. The QR code will contain the short URL. Perfect for long URLs or tracking clicks!
                         </p>
                     </div>
                 </div>
@@ -478,8 +510,9 @@
                 </div>
 
                 <div class="download-section" id="download-section">
-                    <button class="btn btn-primary" onclick="downloadQR()">Download PNG</button>
-                    <button class="btn btn-secondary" onclick="copyToClipboard()">Copy Image</button>
+                    <button class="btn btn-primary" onclick="downloadQR('png')">📥 Download PNG</button>
+                    <button class="btn btn-success" onclick="downloadQR('svg')">🎨 Download SVG</button>
+                    <button class="btn btn-secondary" onclick="copyToClipboard()">📋 Copy Image</button>
                 </div>
             </div>
         </div>
@@ -501,7 +534,7 @@
             
             // Hide all specific fields
             document.getElementById('text-field').style.display = 'none';
-            document.querySelectorAll('.wifi-fields, .link-page-fields, .email-fields, .sms-fields, .vcard-fields').forEach(el => {
+            document.querySelectorAll('.wifi-fields, .link-page-fields, .email-fields, .sms-fields, .vcard-fields, .url-shortener-fields').forEach(el => {
                 el.classList.remove('active');
             });
 
@@ -570,6 +603,12 @@
                     email: document.getElementById('vcard-email').value,
                     website: document.getElementById('vcard-website').value
                 };
+            } else if (type === 'url_shortener') {
+                additionalData.shortener = {
+                    url: document.getElementById('shortener-url').value,
+                    title: document.getElementById('shortener-title').value,
+                    custom_code: document.getElementById('shortener-custom-code').value
+                };
             }
 
             const requestData = {
@@ -583,7 +622,13 @@
             };
 
             try {
-                const endpoint = type === 'link_page' ? '/api/create_link_page' : '/api/generate';
+                let endpoint = '/api/generate';
+                if (type === 'link_page') {
+                    endpoint = '/api/create_link_page';
+                } else if (type === 'url_shortener') {
+                    endpoint = '/api/generate_shortened_qr';
+                }
+                
                 const response = await fetch(endpoint, {
                     method: 'POST',
                     headers: {
@@ -606,10 +651,22 @@
                     if (type === 'link_page') {
                         previewHTML += `
                             <div style="margin-top: 15px; padding: 15px; background: #e3f2fd; border-radius: 8px; text-align: left;">
-                                <h4 style="margin-bottom: 10px; color: #1565c0;">🎉 Dynamic Link Page Created!</h4>
-                                <p style="margin-bottom: 10px; font-size: 0.9em;"><strong>Public URL:</strong> <a href="${result.page_url}" target="_blank">${result.page_url}</a></p>
-                                <p style="margin-bottom: 10px; font-size: 0.9em;"><strong>Edit URL:</strong> <a href="${result.edit_url}" target="_blank">${result.edit_url}</a></p>
-                                <p style="font-size: 0.9em; color: #666;">Share the QR code - visitors will see your link collection. Use the edit URL to manage your links!</p>
+                                <h4 style="margin-bottom: 10px; color: #1565c0;">🎉 Dynamic Link Page Created with Short URL!</h4>
+                                <p style="margin-bottom: 10px; font-size: 0.9em;"><strong>🔗 Short URL:</strong> <a href="${result.page_url}" target="_blank">${result.page_url}</a> 
+                                <button onclick="copyToClipboard('${result.page_url}')" style="margin-left: 10px; padding: 4px 8px; background: #1565c0; color: white; border: none; border-radius: 3px; cursor: pointer; font-size: 0.8em;">Copy</button></p>
+                                <p style="margin-bottom: 10px; font-size: 0.9em;"><strong>📝 Edit URL:</strong> <a href="${result.edit_url}" target="_blank">${result.edit_url}</a></p>
+                                ${result.original_url ? `<p style="margin-bottom: 10px; font-size: 0.8em; color: #666;"><strong>Original URL:</strong> ${result.original_url}</p>` : ''}
+                                <p style="font-size: 0.9em; color: #666;">✨ QR code contains the short URL for easier scanning! Share it - visitors will see your link collection. Use the edit URL to manage your links!</p>
+                            </div>
+                        `;
+                    } else if (type === 'url_shortener') {
+                        previewHTML += `
+                            <div style="margin-top: 15px; padding: 15px; background: #e8f5e8; border-radius: 8px; text-align: left;">
+                                <h4 style="margin-bottom: 10px; color: #2e7d32;">🔗 Short URL Created!</h4>
+                                <p style="margin-bottom: 10px; font-size: 0.9em;"><strong>Short URL:</strong> <a href="${result.short_url}" target="_blank">${result.short_url}</a></p>
+                                <p style="margin-bottom: 10px; font-size: 0.9em;"><strong>Original URL:</strong> <a href="${result.original_url}" target="_blank">${result.original_url}</a></p>
+                                <p style="font-size: 0.9em; color: #666;">The QR code contains your short URL. When scanned, it will redirect to your original URL!</p>
+                                <button onclick="copyToClipboard('${result.short_url}')" style="margin-top: 10px; padding: 8px 15px; background: #2e7d32; color: white; border: none; border-radius: 5px; cursor: pointer;">Copy Short URL</button>
                             </div>
                         `;
                     }
@@ -629,9 +686,13 @@
             }
         }
 
-        async function downloadQR() {
+        async function downloadQR(format = 'png') {
             if (currentQRId) {
-                window.open(`/api/download/${currentQRId}`, '_blank');
+                if (format === 'svg') {
+                    window.open(`/api/download/${currentQRId}/svg`, '_blank');
+                } else {
+                    window.open(`/api/download/${currentQRId}`, '_blank');
+                }
             }
         }
 
@@ -650,6 +711,23 @@
             }
         }
 
+        // Copy to clipboard function
+        function copyToClipboard(text) {
+            navigator.clipboard.writeText(text).then(function() {
+                const btn = event.target;
+                const originalText = btn.textContent;
+                btn.textContent = 'Copied!';
+                btn.style.background = '#4caf50';
+                setTimeout(() => {
+                    btn.textContent = originalText;
+                    btn.style.background = '#2e7d32';
+                }, 1500);
+            }).catch(function(err) {
+                console.error('Could not copy text: ', err);
+                alert('Failed to copy to clipboard');
+            });
+        }
+
         async function loadQRHistory() {
             try {
                 const response = await fetch('/api/qr_codes');
@@ -670,9 +748,10 @@
                             <p>Created: ${new Date(qr.created_at).toLocaleDateString()}</p>
                         </div>
                         <div class="qr-item-actions">
-                            <button class="btn btn-small btn-primary" onclick="downloadQRById('${qr.id}')">Download</button>
-                            ${qr.type === 'link_page' ? `<button class="btn btn-small" onclick="openLinkPage('${qr.id}')" style="background: #28a745;">Manage</button>` : ''}
-                            <button class="btn btn-small btn-secondary" onclick="deleteQR('${qr.id}')">Delete</button>
+                            <button class="btn btn-small btn-primary" onclick="downloadQRById('${qr.id}', 'png')" title="Download PNG">📥 PNG</button>
+                            <button class="btn btn-small btn-success" onclick="downloadQRById('${qr.id}', 'svg')" title="Download SVG">🎨 SVG</button>
+                            ${qr.type === 'link_page' ? `<button class="btn btn-small" onclick="openLinkPage('${qr.id}')" style="background: #28a745;" title="Manage Links">📝 Manage</button>` : ''}
+                            <button class="btn btn-small btn-secondary" onclick="deleteQR('${qr.id}')" title="Delete QR Code">🗑️</button>
                         </div>
                     </div>
                 `).join('');
@@ -681,8 +760,12 @@
             }
         }
 
-        async function downloadQRById(qrId) {
-            window.open(`/api/download/${qrId}`, '_blank');
+        async function downloadQRById(qrId, format = 'png') {
+            if (format === 'svg') {
+                window.open(`/api/download/${qrId}/svg`, '_blank');
+            } else {
+                window.open(`/api/download/${qrId}`, '_blank');
+            }
         }
 
         async function deleteQR(qrId) {

app/templates/link_page.html

@@ -90,7 +90,10 @@
             transition: all 0.3s ease;
             cursor: pointer;
             text-decoration: none;
-            display: block;
+            display: flex;
+            justify-content: space-between;
+            align-items: center;
+            gap: 15px;
             color: inherit;
         }
 
@@ -100,14 +103,22 @@
             border-color: #667eea;
         }
 
+        .link-content {
+            flex: 1;
+        }
+
         .link-title {
             font-size: 1.3em;
             font-weight: 600;
             color: #333;
             margin-bottom: 8px;
-            display: flex;
-            align-items: center;
-            gap: 10px;
+        }
+
+        .link-logo {
+            width: 36px;
+            height: 36px;
+            border-radius: 8px;
+            flex-shrink: 0;
         }
 
         .link-icon {
@@ -153,31 +164,6 @@
             color: #333;
         }
 
-        .footer {
-            background: #f8f9fa;
-            padding: 20px;
-            text-align: center;
-            border-top: 1px solid #e9ecef;
-            color: #666;
-            font-size: 0.9em;
-        }
-
-        .footer a {
-            color: #667eea;
-            text-decoration: none;
-            font-weight: 500;
-        }
-
-        .footer a:hover {
-            text-decoration: underline;
-        }
-
-        .last-updated {
-            margin-top: 10px;
-            font-size: 0.8em;
-            opacity: 0.7;
-        }
-
         @media (max-width: 768px) {
             .header {
                 padding: 30px 20px;
@@ -232,15 +218,19 @@
                 {% if page.links %}
                     <h2>📚 Available Links</h2>
                     {% for link in page.links %}
-                    <a href="{{ link.url }}" target="_blank" class="link-item">
-                        <div class="link-title">
-                            <div class="link-icon">🔗</div>
-                            {{ link.title }}
+                    <a href="{{ link.short_url if link.short_url else link.url }}" target="_blank" class="link-item" data-url="{{ link.url }}">
+                        <div class="link-content">
+                            <div class="link-title">
+                                {{ link.title }}
+                                {% if link.short_url %}<span style="background: #2196f3; color: white; font-size: 0.7em; padding: 2px 6px; border-radius: 10px; margin-left: 8px;">SHORT</span>{% endif %}
+                            </div>
+                            {% if link.description %}
+                            <div class="link-description">{{ link.description }}</div>
+                            {% endif %}
+                            <div class="link-url">{{ link.short_url if link.short_url else link.url }}</div>
                         </div>
-                        {% if link.description %}
-                        <div class="link-description">{{ link.description }}</div>
-                        {% endif %}
-                        <div class="link-url">{{ link.url }}</div>
+                        <img class="link-logo" src="" alt="" style="display: none;" onerror="this.style.display='none'">
+                        <div class="link-icon" style="display: block;">🔗</div>
                     </a>
                     {% endfor %}
                 {% else %}
@@ -252,18 +242,81 @@
                 {% endif %}
             </div>
         </div>
-
-        <div class="footer">
-            <p>Powered by <a href="/">QR Code Manager</a></p>
-            {% if page.updated_at %}
-            <div class="last-updated">
-                Last updated: {{ page.updated_at[:10] }} at {{ page.updated_at[11:19] }}
-            </div>
-            {% endif %}
-        </div>
     </div>
 
     <script>
+        // Social media and website logo detection
+        function getWebsiteLogo(url) {
+            try {
+                const urlObj = new URL(url.startsWith('http') ? url : 'https://' + url);
+                const domain = urlObj.hostname.toLowerCase().replace('www.', '');
+                
+                // Logo mapping for popular sites
+                const logoMap = {
+                    'facebook.com': 'https://cdn.jsdelivr.net/npm/simple-icons@v9/icons/facebook.svg',
+                    'instagram.com': 'https://cdn.jsdelivr.net/npm/simple-icons@v9/icons/instagram.svg',
+                    'twitter.com': 'https://cdn.jsdelivr.net/npm/simple-icons@v9/icons/twitter.svg',
+                    'x.com': 'https://cdn.jsdelivr.net/npm/simple-icons@v9/icons/x.svg',
+                    'tiktok.com': 'https://cdn.jsdelivr.net/npm/simple-icons@v9/icons/tiktok.svg',
+                    'youtube.com': 'https://cdn.jsdelivr.net/npm/simple-icons@v9/icons/youtube.svg',
+                    'linkedin.com': 'https://cdn.jsdelivr.net/npm/simple-icons@v9/icons/linkedin.svg',
+                    'pinterest.com': 'https://cdn.jsdelivr.net/npm/simple-icons@v9/icons/pinterest.svg',
+                    'snapchat.com': 'https://cdn.jsdelivr.net/npm/simple-icons@v9/icons/snapchat.svg',
+                    'whatsapp.com': 'https://cdn.jsdelivr.net/npm/simple-icons@v9/icons/whatsapp.svg',
+                    'telegram.org': 'https://cdn.jsdelivr.net/npm/simple-icons@v9/icons/telegram.svg',
+                    'discord.com': 'https://cdn.jsdelivr.net/npm/simple-icons@v9/icons/discord.svg',
+                    'reddit.com': 'https://cdn.jsdelivr.net/npm/simple-icons@v9/icons/reddit.svg',
+                    'github.com': 'https://cdn.jsdelivr.net/npm/simple-icons@v9/icons/github.svg',
+                    'gmail.com': 'https://cdn.jsdelivr.net/npm/simple-icons@v9/icons/gmail.svg',
+                    'google.com': 'https://cdn.jsdelivr.net/npm/simple-icons@v9/icons/google.svg',
+                    'amazon.com': 'https://cdn.jsdelivr.net/npm/simple-icons@v9/icons/amazon.svg',
+                    'apple.com': 'https://cdn.jsdelivr.net/npm/simple-icons@v9/icons/apple.svg',
+                    'microsoft.com': 'https://cdn.jsdelivr.net/npm/simple-icons@v9/icons/microsoft.svg',
+                    'spotify.com': 'https://cdn.jsdelivr.net/npm/simple-icons@v9/icons/spotify.svg',
+                    'netflix.com': 'https://cdn.jsdelivr.net/npm/simple-icons@v9/icons/netflix.svg',
+                    'twitch.tv': 'https://cdn.jsdelivr.net/npm/simple-icons@v9/icons/twitch.svg',
+                    'dropbox.com': 'https://cdn.jsdelivr.net/npm/simple-icons@v9/icons/dropbox.svg',
+                    'zoom.us': 'https://cdn.jsdelivr.net/npm/simple-icons@v9/icons/zoom.svg'
+                };
+                
+                if (logoMap[domain]) {
+                    return logoMap[domain];
+                }
+                
+                // Fallback to favicon
+                return `https://www.google.com/s2/favicons?domain=${domain}&sz=64`;
+            } catch (e) {
+                return null;
+            }
+        }
+        
+        // Set logos for links
+        function setLogosForLinks() {
+            document.querySelectorAll('.link-item[data-url]').forEach(linkElement => {
+                const url = linkElement.getAttribute('data-url');
+                const logoImg = linkElement.querySelector('.link-logo');
+                const fallbackIcon = linkElement.querySelector('.link-icon');
+                const logoSrc = getWebsiteLogo(url);
+                
+                if (logoSrc && logoImg) {
+                    logoImg.src = logoSrc;
+                    logoImg.style.display = 'block';
+                    logoImg.alt = new URL(url.startsWith('http') ? url : 'https://' + url).hostname;
+                    // Hide the fallback icon when logo is shown
+                    logoImg.onload = function() {
+                        if (fallbackIcon) fallbackIcon.style.display = 'none';
+                    };
+                    logoImg.onerror = function() {
+                        this.style.display = 'none';
+                        if (fallbackIcon) fallbackIcon.style.display = 'flex';
+                    };
+                }
+            });
+        }
+        
+        // Initialize logos when page loads
+        document.addEventListener('DOMContentLoaded', setLogosForLinks);
+        
         // Add click tracking (optional)
         document.querySelectorAll('.link-item').forEach(link => {
             link.addEventListener('click', function() {

app/templates/login.html

@@ -134,22 +134,6 @@
             font-size: 0.9em;
         }
 
-        .default-credentials {
-            background: #fff3cd;
-            border: 1px solid #ffeaa7;
-            color: #856404;
-            padding: 15px;
-            border-radius: 8px;
-            margin-bottom: 20px;
-            text-align: center;
-            font-size: 0.9em;
-        }
-
-        .default-credentials strong {
-            display: block;
-            margin-bottom: 5px;
-        }
-
         @media (max-width: 480px) {
             .login-container {
                 margin: 10px;
@@ -199,12 +183,6 @@
                 {% endif %}
             {% endwith %}
 
-            <div class="default-credentials">
-                <strong>Default Login Credentials:</strong>
-                Username: admin<br>
-                Password: admin123
-            </div>
-
             <form method="POST">
                 <div class="form-group">
                     <label for="username">Username</label>
@@ -222,9 +200,6 @@
 
         <div class="login-footer">
             <p>🔒 Secure QR Code Management System</p>
-            <p style="margin-top: 5px; font-size: 0.8em; opacity: 0.7;">
-                Change default credentials in production
-            </p>
         </div>
     </div>
 

app/utils/__init__.py

@@ -4,8 +4,9 @@ Utility modules for QR Code Manager
 
 from .auth import init_admin, login_required, verify_password, get_admin_credentials
 from .qr_generator import QRCodeGenerator
-from .link_manager import LinkPageManager, link_pages_db
-from .data_manager import QRDataManager, qr_codes_db
+from .link_manager import LinkPageManager
+from .data_manager import QRDataManager
+from .url_shortener import URLShortener
 
 __all__ = [
     'init_admin',
@@ -14,7 +15,6 @@ __all__ = [
     'get_admin_credentials',
     'QRCodeGenerator',
     'LinkPageManager',
-    'link_pages_db',
     'QRDataManager',
-    'qr_codes_db'
+    'URLShortener'
 ]

app/utils/data_manager.py

@@ -3,14 +3,39 @@ Data storage utilities for QR codes
 """
 
 import uuid
+import json
+import os
 from datetime import datetime
 
-# In-memory storage for QR codes (in production, use a database)
-qr_codes_db = {}
+# Data storage directory
+DATA_DIR = 'data'
+QR_CODES_FILE = os.path.join(DATA_DIR, 'qr_codes.json')
+
+# Ensure data directory exists
+os.makedirs(DATA_DIR, exist_ok=True)
 
 class QRDataManager:
     def __init__(self):
-        pass
+        self.qr_codes_db = self._load_qr_codes()
+    
+    def _load_qr_codes(self):
+        """Load QR codes from JSON file"""
+        try:
+            if os.path.exists(QR_CODES_FILE):
+                with open(QR_CODES_FILE, 'r', encoding='utf-8') as f:
+                    return json.load(f)
+            return {}
+        except Exception as e:
+            print(f"Error loading QR codes: {e}")
+            return {}
+    
+    def _save_qr_codes(self):
+        """Save QR codes to JSON file"""
+        try:
+            with open(QR_CODES_FILE, 'w', encoding='utf-8') as f:
+                json.dump(self.qr_codes_db, f, indent=2, ensure_ascii=False)
+        except Exception as e:
+            print(f"Error saving QR codes: {e}")
     
     def save_qr_record(self, qr_type, content, settings, image_data, page_id=None):
         """Save QR code record to database"""
@@ -27,32 +52,45 @@ class QRDataManager:
         if page_id:
             qr_record['page_id'] = page_id
             
-        qr_codes_db[qr_id] = qr_record
+        self.qr_codes_db[qr_id] = qr_record
+        self._save_qr_codes()  # Persist to file
         return qr_id
     
     def get_qr_record(self, qr_id):
         """Get QR code record"""
-        return qr_codes_db.get(qr_id)
+        # Reload data from file to ensure we have the latest data
+        self.qr_codes_db = self._load_qr_codes()
+        return self.qr_codes_db.get(qr_id)
+    
+    def get_qr_code(self, qr_id):
+        """Get QR code record (alias for compatibility)"""
+        return self.get_qr_record(qr_id)
     
     def delete_qr_record(self, qr_id):
         """Delete QR code record"""
-        if qr_id in qr_codes_db:
-            del qr_codes_db[qr_id]
+        if qr_id in self.qr_codes_db:
+            del self.qr_codes_db[qr_id]
+            self._save_qr_codes()  # Persist to file
             return True
         return False
     
     def list_qr_codes(self):
         """List all QR codes"""
+        # Reload data from file to ensure we have the latest data
+        self.qr_codes_db = self._load_qr_codes()
         qr_list = []
-        for qr_id, qr_data in qr_codes_db.items():
+        for qr_id, qr_data in self.qr_codes_db.items():
             qr_list.append({
                 'id': qr_id,
                 'type': qr_data['type'],
                 'created_at': qr_data['created_at'],
-                'preview': f'data:image/png;base64,{qr_data["image_data"]}'
+                'preview': f'data:image/png;base64,{qr_data["image_data"]}',
+                'page_id': qr_data.get('page_id')  # Include page_id if it exists
             })
         return qr_list
     
     def qr_exists(self, qr_id):
         """Check if QR code exists"""
-        return qr_id in qr_codes_db
+        # Reload data from file to ensure we have the latest data
+        self.qr_codes_db = self._load_qr_codes()
+        return qr_id in self.qr_codes_db

app/utils/link_manager.py

@@ -3,14 +3,41 @@ Dynamic Link Page Manager utilities
 """
 
 import uuid
+import json
+import os
 from datetime import datetime
+from .url_shortener import URLShortener
 
-# In-memory storage for dynamic link pages (in production, use a database)
-link_pages_db = {}
+# Data storage directory
+DATA_DIR = 'data'
+LINK_PAGES_FILE = os.path.join(DATA_DIR, 'link_pages.json')
+
+# Ensure data directory exists
+os.makedirs(DATA_DIR, exist_ok=True)
 
 class LinkPageManager:
     def __init__(self):
-        pass
+        self.url_shortener = URLShortener()
+        self.link_pages_db = self._load_link_pages()
+    
+    def _load_link_pages(self):
+        """Load link pages from JSON file"""
+        try:
+            if os.path.exists(LINK_PAGES_FILE):
+                with open(LINK_PAGES_FILE, 'r', encoding='utf-8') as f:
+                    return json.load(f)
+            return {}
+        except Exception as e:
+            print(f"Error loading link pages: {e}")
+            return {}
+    
+    def _save_link_pages(self):
+        """Save link pages to JSON file"""
+        try:
+            with open(LINK_PAGES_FILE, 'w', encoding='utf-8') as f:
+                json.dump(self.link_pages_db, f, indent=2, ensure_ascii=False)
+        except Exception as e:
+            print(f"Error saving link pages: {e}")
     
     def create_link_page(self, title="My Links", description="Collection of useful links"):
         """Create a new dynamic link page"""
@@ -22,34 +49,70 @@ class LinkPageManager:
             'links': [],
             'created_at': datetime.now().isoformat(),
             'updated_at': datetime.now().isoformat(),
-            'view_count': 0
+            'view_count': 0,
+            'short_url': None,  # Will be set when short URL is created
+            'short_code': None
         }
-        link_pages_db[page_id] = page_data
+        self.link_pages_db[page_id] = page_data
+        self._save_link_pages()  # Persist to file
         return page_id
     
-    def add_link(self, page_id, title, url, description=""):
-        """Add a link to a page"""
-        if page_id not in link_pages_db:
+    def set_page_short_url(self, page_id, short_url, short_code):
+        """Set the short URL for a link page"""
+        if page_id in self.link_pages_db:
+            self.link_pages_db[page_id]['short_url'] = short_url
+            self.link_pages_db[page_id]['short_code'] = short_code
+            self.link_pages_db[page_id]['updated_at'] = datetime.now().isoformat()
+            self._save_link_pages()  # Persist to file
+            return True
+        return False
+
+    def add_link(self, page_id, title, url, description="", enable_shortener=False, custom_short_code=None):
+        """Add a link to a page with optional URL shortening"""
+        if page_id not in self.link_pages_db:
             return False
         
+        # Ensure URL has protocol
+        if not url.startswith(('http://', 'https://')):
+            url = f'https://{url}'
+        
+        # Create the link data
         link_data = {
             'id': str(uuid.uuid4()),
             'title': title,
-            'url': url if url.startswith(('http://', 'https://')) else f'https://{url}',
+            'url': url,
             'description': description,
-            'created_at': datetime.now().isoformat()
+            'created_at': datetime.now().isoformat(),
+            'short_url': None,
+            'short_code': None,
+            'clicks': 0
         }
         
-        link_pages_db[page_id]['links'].append(link_data)
-        link_pages_db[page_id]['updated_at'] = datetime.now().isoformat()
+        # Generate short URL if enabled
+        if enable_shortener:
+            try:
+                short_result = self.url_shortener.create_short_url(
+                    url, 
+                    custom_code=custom_short_code,
+                    title=title
+                )
+                link_data['short_url'] = short_result['short_url']
+                link_data['short_code'] = short_result['short_code']
+            except Exception as e:
+                # If shortening fails, continue without it
+                print(f"URL shortening failed: {e}")
+        
+        self.link_pages_db[page_id]['links'].append(link_data)
+        self.link_pages_db[page_id]['updated_at'] = datetime.now().isoformat()
+        self._save_link_pages()  # Persist to file
         return True
     
-    def update_link(self, page_id, link_id, title=None, url=None, description=None):
-        """Update a specific link"""
-        if page_id not in link_pages_db:
+    def update_link(self, page_id, link_id, title=None, url=None, description=None, enable_shortener=None, custom_short_code=None):
+        """Update a specific link with optional URL shortening"""
+        if page_id not in self.link_pages_db:
             return False
         
-        for link in link_pages_db[page_id]['links']:
+        for link in self.link_pages_db[page_id]['links']:
             if link['id'] == link_id:
                 if title is not None:
                     link['title'] = title
@@ -58,29 +121,79 @@ class LinkPageManager:
                 if description is not None:
                     link['description'] = description
                 
-                link_pages_db[page_id]['updated_at'] = datetime.now().isoformat()
+                # Handle URL shortening update
+                if enable_shortener is not None:
+                    if enable_shortener and not link.get('short_url'):
+                        # Create new short URL
+                        try:
+                            short_result = self.url_shortener.create_short_url(
+                                link['url'], 
+                                custom_code=custom_short_code,
+                                title=link['title']
+                            )
+                            link['short_url'] = short_result['short_url']
+                            link['short_code'] = short_result['short_code']
+                        except Exception as e:
+                            print(f"URL shortening failed: {e}")
+                    elif not enable_shortener and link.get('short_code'):
+                        # Remove short URL
+                        if link.get('short_code'):
+                            self.url_shortener.delete_url(link['short_code'])
+                        link['short_url'] = None
+                        link['short_code'] = None
+                
+                self.link_pages_db[page_id]['updated_at'] = datetime.now().isoformat()
+                self._save_link_pages()  # Persist to file
                 return True
         return False
-    
+
     def delete_link(self, page_id, link_id):
         """Delete a specific link"""
-        if page_id not in link_pages_db:
+        if page_id not in self.link_pages_db:
             return False
         
-        links = link_pages_db[page_id]['links']
-        link_pages_db[page_id]['links'] = [link for link in links if link['id'] != link_id]
-        link_pages_db[page_id]['updated_at'] = datetime.now().isoformat()
+        links = self.link_pages_db[page_id]['links']
+        for link in links:
+            if link['id'] == link_id and link.get('short_code'):
+                # Delete the short URL if it exists
+                self.url_shortener.delete_url(link['short_code'])
+        
+        self.link_pages_db[page_id]['links'] = [link for link in links if link['id'] != link_id]
+        self.link_pages_db[page_id]['updated_at'] = datetime.now().isoformat()
+        self._save_link_pages()  # Persist to file
         return True
     
     def increment_view_count(self, page_id):
         """Increment view count for a page"""
-        if page_id in link_pages_db:
-            link_pages_db[page_id]['view_count'] += 1
+        if page_id in self.link_pages_db:
+            self.link_pages_db[page_id]['view_count'] += 1
+            self._save_link_pages()  # Persist to file
     
     def get_page(self, page_id):
         """Get page data"""
-        return link_pages_db.get(page_id)
+        # Reload data from file to ensure we have the latest data
+        self.link_pages_db = self._load_link_pages()
+        return self.link_pages_db.get(page_id)
     
     def page_exists(self, page_id):
         """Check if page exists"""
-        return page_id in link_pages_db
+        # Reload data from file to ensure we have the latest data
+        self.link_pages_db = self._load_link_pages()
+        return page_id in self.link_pages_db
+    
+    # URL Shortener management methods
+    def create_standalone_short_url(self, url, title="", custom_code=None):
+        """Create a standalone short URL (not tied to a link page)"""
+        return self.url_shortener.create_short_url(url, custom_code, title)
+    
+    def get_short_url_stats(self, short_code):
+        """Get statistics for a short URL"""
+        return self.url_shortener.get_url_stats(short_code)
+    
+    def list_all_short_urls(self):
+        """List all short URLs in the system"""
+        return self.url_shortener.list_urls()
+    
+    def resolve_short_url(self, short_code):
+        """Resolve a short URL to its original URL"""
+        return self.url_shortener.get_original_url(short_code)

app/utils/qr_generator.py

@@ -6,7 +6,9 @@ import os
 import qrcode
 from qrcode.image.styledpil import StyledPilImage
 from qrcode.image.styles.moduledrawers import RoundedModuleDrawer, CircleModuleDrawer, SquareModuleDrawer
+from qrcode.image.svg import SvgPathImage, SvgFragmentImage, SvgFillImage
 from PIL import Image
+import io
 
 class QRCodeGenerator:
     def __init__(self):
@@ -19,8 +21,8 @@ class QRCodeGenerator:
             'style': 'square'
         }
     
-    def generate_qr_code(self, data, settings=None):
-        """Generate QR code with custom settings"""
+    def generate_qr_code(self, data, settings=None, format='PNG'):
+        """Generate QR code with custom settings in PNG or SVG format"""
         if settings is None:
             settings = self.default_settings.copy()
         else:
@@ -28,6 +30,13 @@ class QRCodeGenerator:
             merged_settings.update(settings)
             settings = merged_settings
         
+        if format.upper() == 'SVG':
+            return self._generate_svg_qr_code(data, settings)
+        else:
+            return self._generate_png_qr_code(data, settings)
+    
+    def _generate_png_qr_code(self, data, settings):
+        """Generate PNG QR code (existing functionality)"""
         # Create QR code instance
         qr = qrcode.QRCode(
             version=1,
@@ -64,6 +73,47 @@ class QRCodeGenerator:
         
         return img
     
+    def _generate_svg_qr_code(self, data, settings):
+        """Generate SVG QR code"""
+        # Create QR code instance
+        qr = qrcode.QRCode(
+            version=1,
+            error_correction=settings['error_correction'],
+            box_size=settings['size'],
+            border=settings['border'],
+        )
+        
+        qr.add_data(data)
+        qr.make(fit=True)
+        
+        # Choose SVG image factory based on style
+        if settings['style'] == 'circle':
+            # Use SvgFillImage for better circle support
+            factory = SvgFillImage
+        else:
+            # Use SvgPathImage for square and rounded styles
+            factory = SvgPathImage
+        
+        # Generate SVG image
+        img = qr.make_image(
+            image_factory=factory,
+            fill_color=settings['foreground_color'],
+            back_color=settings['background_color']
+        )
+        
+        return img
+    
+    def generate_qr_code_svg_string(self, data, settings=None):
+        """Generate QR code as SVG string"""
+        svg_img = self.generate_qr_code(data, settings, format='SVG')
+        
+        # Convert SVG image to string
+        svg_buffer = io.BytesIO()
+        svg_img.save(svg_buffer)
+        svg_buffer.seek(0)
+        
+        return svg_buffer.getvalue().decode('utf-8')
+    
     def add_logo(self, qr_img, logo_path, logo_size_ratio=0.2):
         """Add logo to QR code"""
         try:

app/utils/url_shortener.py

@@ -0,0 +1,122 @@
+"""
+URL Shortener utilities for QR Code Manager
+"""
+
+import os
+import uuid
+import string
+import random
+import json
+from datetime import datetime
+
+# Data storage directory
+DATA_DIR = 'data'
+SHORT_URLS_FILE = os.path.join(DATA_DIR, 'short_urls.json')
+
+# Ensure data directory exists
+os.makedirs(DATA_DIR, exist_ok=True)
+
+class URLShortener:
+    def __init__(self):
+        self.base_domain = os.environ.get('APP_DOMAIN', 'localhost:5000')
+        # Ensure we have the protocol
+        if not self.base_domain.startswith(('http://', 'https://')):
+            # Use HTTPS for production domains, HTTP for localhost
+            protocol = 'https://' if 'localhost' not in self.base_domain else 'http://'
+            self.base_domain = f"{protocol}{self.base_domain}"
+        
+        self.short_urls_db = self._load_short_urls()
+    
+    def _load_short_urls(self):
+        """Load short URLs from JSON file"""
+        try:
+            if os.path.exists(SHORT_URLS_FILE):
+                with open(SHORT_URLS_FILE, 'r', encoding='utf-8') as f:
+                    return json.load(f)
+            return {}
+        except Exception as e:
+            print(f"Error loading short URLs: {e}")
+            return {}
+    
+    def _save_short_urls(self):
+        """Save short URLs to JSON file"""
+        try:
+            with open(SHORT_URLS_FILE, 'w', encoding='utf-8') as f:
+                json.dump(self.short_urls_db, f, indent=2, ensure_ascii=False)
+        except Exception as e:
+            print(f"Error saving short URLs: {e}")
+    
+    def generate_short_code(self, length=6):
+        """Generate a random short code"""
+        characters = string.ascii_letters + string.digits
+        while True:
+            short_code = ''.join(random.choice(characters) for _ in range(length))
+            # Ensure uniqueness
+            if short_code not in self.short_urls_db:
+                return short_code
+    
+    def create_short_url(self, original_url, custom_code=None, title=""):
+        """Create a shortened URL"""
+        # Generate or use custom short code
+        if custom_code and custom_code not in self.short_urls_db:
+            short_code = custom_code
+        else:
+            short_code = self.generate_short_code()
+        
+        # Ensure original URL has protocol
+        if not original_url.startswith(('http://', 'https://')):
+            original_url = f'https://{original_url}'
+        
+        # Create URL record
+        url_data = {
+            'id': str(uuid.uuid4()),
+            'short_code': short_code,
+            'original_url': original_url,
+            'title': title,
+            'clicks': 0,
+            'created_at': datetime.now().isoformat(),
+            'last_accessed': None
+        }
+        
+        self.short_urls_db[short_code] = url_data
+        self._save_short_urls()  # Persist to file
+        
+        # Return the complete short URL
+        short_url = f"{self.base_domain}/s/{short_code}"
+        return {
+            'short_url': short_url,
+            'short_code': short_code,
+            'original_url': original_url,
+            'id': url_data['id']
+        }
+    
+    def get_original_url(self, short_code):
+        """Get original URL from short code and track click"""
+        if short_code in self.short_urls_db:
+            url_data = self.short_urls_db[short_code]
+            # Track click
+            url_data['clicks'] += 1
+            url_data['last_accessed'] = datetime.now().isoformat()
+            self._save_short_urls()  # Persist to file
+            return url_data['original_url']
+        return None
+    
+    def get_url_stats(self, short_code):
+        """Get statistics for a short URL"""
+        return self.short_urls_db.get(short_code)
+    
+    def list_urls(self):
+        """List all short URLs"""
+        return list(self.short_urls_db.values())
+    
+    def delete_url(self, short_code):
+        """Delete a short URL"""
+        if short_code in self.short_urls_db:
+            del self.short_urls_db[short_code]
+            self._save_short_urls()  # Persist to file
+            return True
+        return False
+    
+    def url_exists(self, short_code):
+        """Check if short URL exists"""
+        return short_code in self.short_urls_db

clean_data.py

@@ -0,0 +1,196 @@
+#!/usr/bin/env python3
+"""
+QR Code Manager - Data Cleanup Script
+
+This script removes all persistent data to prepare for a clean deployment.
+It will delete:
+- All QR codes and their data
+- All dynamic link pages
+- All short URLs
+- All uploaded QR code images
+- Flask session files
+
+Use this script when you want to start fresh or prepare for deployment.
+"""
+
+import os
+import shutil
+import json
+from pathlib import Path
+
+def clean_json_data():
+    """Clean all JSON data files"""
+    data_dir = Path('data')
+    json_files = [
+        'qr_codes.json',
+        'link_pages.json', 
+        'short_urls.json'
+    ]
+    
+    print("🗑️  Cleaning JSON data files...")
+    
+    for json_file in json_files:
+        file_path = data_dir / json_file
+        if file_path.exists():
+            # Reset to empty object
+            with open(file_path, 'w', encoding='utf-8') as f:
+                json.dump({}, f, indent=2)
+            print(f"   ✅ Cleared {json_file}")
+        else:
+            print(f"   ⚠️  {json_file} not found")
+
+def clean_qr_images():
+    """Clean all QR code image files"""
+    qr_dir = Path('app/static/qr_codes')
+    
+    print("🖼️  Cleaning QR code images...")
+    
+    if qr_dir.exists():
+        # Count files before deletion
+        files = list(qr_dir.glob('*.png'))
+        count = len(files)
+        
+        # Delete all PNG files
+        for file in files:
+            file.unlink()
+            
+        print(f"   ✅ Deleted {count} QR code images")
+    else:
+        print("   ⚠️  QR codes directory not found")
+
+def clean_flask_sessions():
+    """Clean Flask session files"""
+    session_dir = Path('flask_session')
+    
+    print("🔐 Cleaning Flask sessions...")
+    
+    if session_dir.exists():
+        # Count files before deletion
+        files = list(session_dir.iterdir())
+        count = len(files)
+        
+        # Delete all session files
+        for file in files:
+            if file.is_file():
+                file.unlink()
+                
+        print(f"   ✅ Deleted {count} session files")
+    else:
+        print("   ⚠️  Flask session directory not found")
+
+def clean_logs():
+    """Clean any log files"""
+    print("📝 Cleaning log files...")
+    
+    log_patterns = ['*.log', '*.log.*']
+    found_logs = False
+    
+    for pattern in log_patterns:
+        for log_file in Path('.').glob(pattern):
+            log_file.unlink()
+            print(f"   ✅ Deleted {log_file}")
+            found_logs = True
+            
+    if not found_logs:
+        print("   ✅ No log files found")
+
+def clean_pycache():
+    """Clean Python cache files"""
+    print("🐍 Cleaning Python cache...")
+    
+    cache_dirs = list(Path('.').rglob('__pycache__'))
+    pyc_files = list(Path('.').rglob('*.pyc'))
+    
+    # Remove __pycache__ directories
+    for cache_dir in cache_dirs:
+        if cache_dir.is_dir():
+            shutil.rmtree(cache_dir)
+            
+    # Remove .pyc files
+    for pyc_file in pyc_files:
+        pyc_file.unlink()
+        
+    total_cleaned = len(cache_dirs) + len(pyc_files)
+    print(f"   ✅ Cleaned {total_cleaned} cache files/directories")
+
+def create_fresh_directories():
+    """Ensure required directories exist"""
+    print("📁 Creating fresh directories...")
+    
+    directories = [
+        'data',
+        'app/static/qr_codes',
+        'app/static/logos',
+        'flask_session'
+    ]
+    
+    for directory in directories:
+        Path(directory).mkdir(parents=True, exist_ok=True)
+        print(f"   ✅ Ensured {directory} exists")
+
+def main():
+    """Main cleanup function"""
+    print("🧹 QR Code Manager - Data Cleanup Script")
+    print("=" * 50)
+    
+    # Change to script directory
+    script_dir = Path(__file__).parent
+    os.chdir(script_dir)
+    
+    print(f"📂 Working directory: {os.getcwd()}")
+    print()
+    
+    # Ask for confirmation
+    print("⚠️  WARNING: This will delete ALL persistent data!")
+    print("   - All QR codes and their images")
+    print("   - All dynamic link pages") 
+    print("   - All short URLs")
+    print("   - All Flask sessions")
+    print("   - All log files")
+    print("   - All Python cache files")
+    print()
+    
+    confirm = input("Are you sure you want to continue? Type 'YES' to confirm: ")
+    
+    if confirm != 'YES':
+        print("❌ Cleanup cancelled.")
+        return
+    
+    print()
+    print("🚀 Starting cleanup process...")
+    print()
+    
+    try:
+        # Clean different types of data
+        clean_json_data()
+        print()
+        
+        clean_qr_images()
+        print()
+        
+        clean_flask_sessions()
+        print()
+        
+        clean_logs()
+        print()
+        
+        clean_pycache()
+        print()
+        
+        create_fresh_directories()
+        print()
+        
+        print("✅ Cleanup completed successfully!")
+        print()
+        print("🎉 Your QR Code Manager is now ready for a fresh deployment!")
+        print("   Next steps:")
+        print("   1. Start the application: python main.py")
+        print("   2. Login with: admin / admin123")
+        print("   3. Change the default password")
+        
+    except Exception as e:
+        print(f"❌ Error during cleanup: {e}")
+        print("Please check the error and try again.")
+
+if __name__ == '__main__':
+    main()

clean_data.sh

@@ -0,0 +1,101 @@
+#!/bin/bash
+"""
+QR Code Manager - Quick Data Cleanup Script (Shell Version)
+
+A simple shell script to clean all persistent data for deployment.
+"""
+
+echo "🧹 QR Code Manager - Quick Data Cleanup"
+echo "======================================"
+echo ""
+
+# Get script directory
+SCRIPT_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" &> /dev/null && pwd )"
+cd "$SCRIPT_DIR"
+
+echo "📂 Working directory: $(pwd)"
+echo ""
+
+echo "⚠️  WARNING: This will delete ALL persistent data!"
+echo "   - All QR codes and their images"
+echo "   - All dynamic link pages"
+echo "   - All short URLs" 
+echo "   - All Flask sessions"
+echo ""
+
+read -p "Are you sure you want to continue? Type 'YES' to confirm: " confirm
+
+if [ "$confirm" != "YES" ]; then
+    echo "❌ Cleanup cancelled."
+    exit 0
+fi
+
+echo ""
+echo "🚀 Starting cleanup process..."
+echo ""
+
+# Clean JSON data files
+echo "🗑️  Cleaning JSON data files..."
+if [ -d "data" ]; then
+    echo '{}' > data/qr_codes.json 2>/dev/null && echo "   ✅ Cleared qr_codes.json" || echo "   ⚠️  qr_codes.json not found"
+    echo '{}' > data/link_pages.json 2>/dev/null && echo "   ✅ Cleared link_pages.json" || echo "   ⚠️  link_pages.json not found"  
+    echo '{}' > data/short_urls.json 2>/dev/null && echo "   ✅ Cleared short_urls.json" || echo "   ⚠️  short_urls.json not found"
+else
+    echo "   ⚠️  Data directory not found"
+fi
+echo ""
+
+# Clean QR code images
+echo "🖼️  Cleaning QR code images..."
+if [ -d "app/static/qr_codes" ]; then
+    COUNT=$(find app/static/qr_codes -name "*.png" | wc -l)
+    find app/static/qr_codes -name "*.png" -delete
+    echo "   ✅ Deleted $COUNT QR code images"
+else
+    echo "   ⚠️  QR codes directory not found"
+fi
+echo ""
+
+# Clean Flask sessions
+echo "🔐 Cleaning Flask sessions..."
+if [ -d "flask_session" ]; then
+    COUNT=$(find flask_session -type f | wc -l)
+    find flask_session -type f -delete
+    echo "   ✅ Deleted $COUNT session files"
+else
+    echo "   ⚠️  Flask session directory not found"
+fi
+echo ""
+
+# Clean log files
+echo "📝 Cleaning log files..."
+LOG_COUNT=$(find . -maxdepth 1 -name "*.log*" | wc -l)
+if [ $LOG_COUNT -gt 0 ]; then
+    find . -maxdepth 1 -name "*.log*" -delete
+    echo "   ✅ Deleted $LOG_COUNT log files"
+else
+    echo "   ✅ No log files found"
+fi
+echo ""
+
+# Clean Python cache
+echo "🐍 Cleaning Python cache..."
+CACHE_COUNT=$(find . -name "__pycache__" -o -name "*.pyc" | wc -l)
+find . -name "__pycache__" -exec rm -rf {} + 2>/dev/null
+find . -name "*.pyc" -delete 2>/dev/null
+echo "   ✅ Cleaned $CACHE_COUNT cache files/directories"
+echo ""
+
+# Create fresh directories
+echo "📁 Creating fresh directories..."
+mkdir -p data app/static/qr_codes app/static/logos flask_session
+echo "   ✅ Ensured all directories exist"
+echo ""
+
+echo "✅ Cleanup completed successfully!"
+echo ""
+echo "🎉 Your QR Code Manager is now ready for a fresh deployment!"
+echo "   Next steps:"
+echo "   1. Start the application: python main.py"
+echo "   2. Login with: admin / admin123"
+echo "   3. Change the default password"

data/link_pages.json

@@ -0,0 +1 @@
+{}

data/qr_codes.json

@@ -0,0 +1 @@
+{}

data/short_urls.json

@@ -0,0 +1 @@
+{}

docker-compose.yml

@@ -16,6 +16,7 @@ services:
       - qr_data:/app/app/static/qr_codes
       - logo_data:/app/app/static/logos
       - session_data:/app/flask_session
+      - persistent_data:/app/data
     healthcheck:
       test: ["CMD", "python", "-c", "import requests; requests.get('http://localhost:5000/health')"]
       interval: 30s
@@ -33,6 +34,8 @@ volumes:
     driver: local
   session_data:
     driver: local
+  persistent_data:
+    driver: local
 
 networks:
   default:

gunicorn.conf.py

@@ -0,0 +1,37 @@
+# Gunicorn configuration file
+# Documentation: https://docs.gunicorn.org/en/stable/configure.html
+
+# Server socket
+bind = "0.0.0.0:5000"
+backlog = 2048
+
+# Worker processes
+workers = 4
+worker_class = "sync"
+worker_connections = 1000
+timeout = 30
+keepalive = 2
+
+# Restart workers after this many requests, to prevent memory leaks
+max_requests = 1000
+max_requests_jitter = 50
+
+# Logging
+accesslog = "-"
+errorlog = "-"
+loglevel = "info"
+access_log_format = '%(h)s %(l)s %(u)s %(t)s "%(r)s" %(s)s %(b)s "%(f)s" "%(a)s"'
+
+# Process naming
+proc_name = "qr-code-manager"
+
+# Server mechanics
+preload_app = True
+pidfile = "/tmp/gunicorn.pid"
+user = "app"
+group = "app"
+tmp_upload_dir = None
+
+# SSL (uncomment and configure for HTTPS)
+# keyfile = "/path/to/keyfile"
+# certfile = "/path/to/certfile"

main.py

@@ -1,11 +1,13 @@
 #!/usr/bin/env python3
-"""
-QR Code Manager - Main Application Entry Point
+"""        print("🚀 QR Code Manager - Production Mode")
+        print("ℹ️  This should be run with Gunicorn in production!")
+        print("🔧 Use: gunicorn -c gunicorn.conf.py main:app") Code Manager - Main Application Entry Point
 
 A modern Flask web application for generating and managing QR codes with authentication.
 Features include:
 - Multiple QR code types (text, URL, WiFi, email, SMS, vCard)
 - Dynamic link pages for managing collections of links
+- URL shortener functionality with custom domains
 - Admin authentication with bcrypt password hashing
 - Docker deployment ready
 - Modern responsive web interface
@@ -20,14 +22,20 @@ app = create_app()
 if __name__ == '__main__':
     # Production vs Development configuration
     is_production = os.environ.get('FLASK_ENV') == 'production'
+    app_domain = os.environ.get('APP_DOMAIN', 'localhost:5000')
     
     if is_production:
-        print("🚀 Starting QR Code Manager in PRODUCTION mode")
-        print("🔐 Admin user: admin")
-        print("🔒 Make sure to change default credentials!")
-        app.run(host='0.0.0.0', port=5000, debug=False)
+        print("🚀 QR Code Manager - Production Mode")
+        print("ℹ️  This should be run with Gunicorn in production!")
+        print("<EFBFBD> Use: gunicorn -c gunicorn.conf.py main:app")
+        print(f"🌐 Domain configured: {app_domain}")
+        print("🔗 URL shortener available at: /s/")
+        # In production, this file is used by Gunicorn as WSGI application
+        # The Flask dev server should NOT be started in production
     else:
         print("🛠️  Starting QR Code Manager in DEVELOPMENT mode")
         print("🔐 Admin user: admin")
         print("🔑 Default password: admin123")
+        print(f"🌐 Domain configured: {app_domain}")
+        print("🔗 URL shortener available at: /s/")
         app.run(host='0.0.0.0', port=5000, debug=True)

requirements.txt

@@ -7,3 +7,5 @@ requests==2.31.0
 flask-session==0.5.0
 werkzeug==2.3.7
 bcrypt==4.0.1
+lxml==4.9.3
+gunicorn==21.2.0