Konvert - Professional File Converter

Technical Implementation

1. Client-Side Architecture

Konvert uses FFmpeg WebAssembly to process files entirely in the browser. This approach ensures complete privacy as no data ever leaves the user's device, while providing desktop-class conversion capabilities.

2. FFmpeg WebAssembly Integration

The core conversion engine leverages FFmpeg compiled to WebAssembly, providing professional-grade multimedia processing capabilities directly in the browser.

// FFmpeg initialization
export default async function loadFfmpeg(): Promise<FFmpeg> {
  const ffmpeg = new FFmpeg();
  const baseURL = "https://unpkg.com/@ffmpeg/core@0.12.2/dist/umd";
  await ffmpeg.load({
    coreURL: await toBlobURL(`${baseURL}/ffmpeg-core.js`, "text/javascript"),
    wasmURL: await toBlobURL(`${baseURL}/ffmpeg-core.wasm`, "application/wasm"),
  });
  return ffmpeg;
}

// Format-specific conversion
export default async function convert(ffmpeg: FFmpeg, action: Action) {
  const { file, to, file_name } = action;
  const input = getFileExtension(file_name);
  const output = removeFileExtension(file_name) + "." + to;

  // Format-specific FFmpeg commands
  let ffmpeg_cmd: any = [];
  
  if (to === "3gp") {
    ffmpeg_cmd = ["-i", input, "-r", "20", "-s", "352x288"];
  } else if (["jpg", "jpeg", "png"].includes(to.toLowerCase())) {
    ffmpeg_cmd = ["-i", input, output];
  }
  // ... more format handling
}

3. Supported File Formats

Konvert supports 40+ file formats across images, videos, and audio, including modern formats like WebP, AVIF, and HEIC.

Performance & User Experience

1. Real-Time Processing

Files convert instantly in the browser with real-time progress tracking and batch processing capabilities.

// Real-time progress tracking
const [actions, setActions] = useState<Action[]>([]);
const [is_loaded, setIsLoaded] = useState<boolean>(false);
const [is_converting, setIsConverting] = useState<boolean>(false);

// Batch processing support
const convertFiles = async () => {
  for (const action of actions) {
    setActions((prev) =>
      prev.map((a) => (a === action ? { ...a, is_converting: true } : a))
    );
    // Process file with progress updates...
  }
};

2. Performance Metrics

Technical Challenges & Solutions

1. WebAssembly Integration

Challenge: Integrating FFmpeg WebAssembly with React/Next.js for seamless file processing.

Solution: Custom loader with CDN-based WASM bundles, proper memory management, and comprehensive error handling for unsupported browsers.

2. Large File Processing

Challenge: Browser memory limitations with large media files.

Solution: Streaming file processing, efficient memory allocation, and real-time progress tracking with user feedback.

3. Format Complexity

Challenge: Each format requires specific encoding parameters and quality optimization.

Solution: Format-specific command builders, quality presets for optimal output, and graceful fallback handling for edge cases.

Key Achievements

Skills Demonstrated

Future Enhancements

• PDF Conversion: Add PDF processing capabilities with OCR support
• Advanced Settings: Quality sliders and format-specific options
• File Preview: Thumbnail generation for converted files
• Cloud Integration: Optional cloud storage for user convenience
• API Access: Programmatic access for developers