Iโm excited to share my latest project: Svelte Frame Extractor - a powerful, privacy-focused video frame extraction tool that runs entirely in your browser. Built with Svelte 5 and modern web technologies, it demonstrates how we can create sophisticated media processing applications without compromising user privacy.
๐ฏ The Problem
Traditional video processing tools often require uploading your videos to external servers, raising privacy concerns and bandwidth limitations. Whether youโre a content creator extracting thumbnails, a developer needing video frames for analysis, or a researcher working with sensitive footage, existing solutions force you to trust third parties with your data.
๐ก The Solution
Svelte Frame Extractor solves this by leveraging the power of modern browsers to process videos entirely client-side. Your videos never leave your device, ensuring complete privacy while providing professional-grade frame extraction capabilities.
โจ Key Features
๐ 100% Private Processing
All video processing happens in your browser using the HTML5 Canvas API and Web Workers. No servers, no uploads, no privacy concerns.
๐ฏ Multiple Extraction Methods
- Interval Mode: Extract frames at regular time intervals (every N seconds)
- Count Mode: Extract a specific number of evenly distributed frames
- Range Mode: Extract frames from a specific time range with precision
๐ท๏ธ Advanced Watermarking
Add professional watermarks to your extracted frames with:
- Custom text, font size, and color options
- Adjustable opacity (0-100%)
- Flexible positioning (corners, center, custom coordinates)
- Real-time preview before extraction
๐ธ Flexible Export Options
- Format Support: Export as high-quality JPEG or PNG
- Single Download: Download individual frames instantly
- Bulk Export: Package multiple frames into a convenient ZIP archive
- Quality Control: Adjustable compression settings for optimal file sizes
๐จ Modern User Experience
- Glassmorphism Design: Beautiful, modern interface with smooth animations
- Responsive Layout: Perfect experience on desktop, tablet, and mobile
- Drag & Drop: Intuitive file upload with visual feedback
- Real-time Preview: See your video and extracted frames immediately
๐ ๏ธ Technical Architecture
Frontend Framework
Built with Svelte 5 using the latest runes API for reactive state management, providing optimal performance and developer experience.
Styling & Components
- TailwindCSS 4.0: Utility-first styling with custom animations
- Shadcn-Svelte: Accessible, customizable UI components
- Lucide Icons: Beautiful, consistent iconography
Core Processing
- HTML5 Canvas: High-performance frame rendering and manipulation
- Web Workers: Background processing to maintain UI responsiveness
- JSZip: Client-side ZIP generation for bulk downloads
Development Stack
- TypeScript: Type safety and enhanced developer experience
- Vite: Lightning-fast build tool and development server
- Bun: Modern JavaScript runtime for faster dependency management
๐๏ธ Component Architecture
The application follows a modular, component-based architecture:
src/lib/components/
โโโ VideoUpload.svelte # Drag & drop file handling
โโโ VideoPreview.svelte # HTML5 video player with controls
โโโ ExtractionSettings.svelte # Configuration panel
โโโ ExtractedFrames.svelte # Frame gallery with selection
โโโ VideoProcessor.svelte # Core processing logic
โโโ ui/ # Reusable UI components
Each component has a single responsibility, making the codebase maintainable and testable.
๐ Getting Started
Quick Setup
# Clone the repository
git clone https://github.com/zxce3/svelte-frame-extractor.git
cd svelte-frame-extractor
# Install dependencies (using Bun for speed)
bun install
# Start development server
bun run dev
Production Build
# Create optimized build
bun run build
# Preview production version
bun run preview
๐ฎ How to Use
- Upload Your Video: Drag and drop any video file or click to browse
- Configure Extraction:
- Choose your preferred extraction method
- Set parameters (intervals, counts, time ranges)
- Select output format (JPEG/PNG)
- Optionally enable and customize watermarks
- Extract Frames: Click โExtract Framesโ to start processing
- Review & Download: Preview frames, select your favorites, and download individually or as a ZIP
๐ Technical Highlights
Performance Optimizations
- Web Workers: Offload processing to prevent UI blocking
- Canvas Optimization: Efficient memory management for large videos
- Lazy Loading: Progressive frame rendering for better UX
- Debounced Controls: Smooth parameter adjustments
Browser Compatibility
- Modern browsers with HTML5 video support
- Progressive enhancement for older browsers
- Mobile-optimized touch interactions
Security & Privacy
- No external API calls during processing
- Client-side encryption for sensitive operations
- No tracking or analytics by default
๐ง Customization
The project is designed for easy customization:
// Example: Custom watermark positioning
const watermarkConfig = {
text: "ยฉ Your Brand",
position: { x: 0.95, y: 0.95 }, // Bottom-right corner
opacity: 0.7,
fontSize: 24,
color: "#ffffff"
};
๐ค Contributing
This project welcomes contributions! Whether youโre fixing bugs, adding features, or improving documentation, your help is appreciated.
Development Workflow
- Fork the repository
- Create a feature branch (
git checkout -b feature/amazing-feature
) - Make your changes with proper tests
- Commit with descriptive messages
- Push to your fork and create a Pull Request
๐ฎ Future Enhancements
- Batch Processing: Handle multiple videos simultaneously
- Advanced Filters: Image processing filters and effects
- Cloud Integration: Optional cloud storage connectors
- Video Formats: Support for more video codecs and containers
- API Mode: Programmatic access for developers
๐ Impact & Use Cases
This tool addresses real-world needs across various domains:
- Content Creators: Extract thumbnails and preview frames
- Educators: Create visual aids from educational videos
- Researchers: Analyze video content frame by frame
- Developers: Generate datasets for computer vision projects
- Marketers: Create promotional images from video content
๐ Why This Matters
Svelte Frame Extractor demonstrates that we donโt need to sacrifice privacy for functionality. By leveraging modern web APIs and thoughtful architecture, we can create powerful applications that respect user data while delivering professional results.
The project also showcases Svelte 5โs capabilities, proving that lightweight frameworks can handle complex, performance-critical applications just as well as heavier alternatives.
๐ Links & Resources
- GitHub Repository - Source code and documentation
- Technical Documentation - Detailed setup and API reference
Built with โค๏ธ using Svelte 5 and modern web technologies. If you find this project useful, consider giving it a star on GitHub or sharing it with others who might benefit from privacy-first video processing.
Backlinks: