K-Convert
A privacy-first file converter that runs entirely in your browser using WebAssembly. No uploads, no servers—your files never leave your device.
Features
- 100% Client-Side — All conversions happen locally using WASM
- Image Conversion — JPEG, PNG, WebP, GIF, BMP, TIFF, HEIC, ICO, AVIF, JXL, SVG, PSD, RAW, TGA
- Audio Conversion — MP3, WAV, OGG, M4A, FLAC, AAC, AIFF, ALAC, WMA, Opus, M4R, AMR
- Drag & Drop — Simple file upload with batch support
- Progress Tracking — Real-time conversion progress
- Dark Mode — Beautiful dark theme enabled by default
Tech Stack
- Frontend: React + TypeScript + Vite
- UI: Shadcn UI + Tailwind CSS
- Image Processing: ImageMagick WASM
- Audio Processing: FFmpeg WASM
- HEIC Support: heic2any
Getting Started
# Install dependencies
npm install
# Start development server
npm run dev
# Build for production
npm run build
Architecture
The app uses a Worker-Broker model for efficient processing:
Main Thread (UI) ←→ ConversionBroker ←→ Web Workers (WASM)
- Image Worker — Handles all image conversions via ImageMagick WASM
- Audio Worker — Handles all audio conversions via FFmpeg WASM
- Adapters — Clean abstractions for each conversion type
Browser Requirements
Requires a modern browser with:
- WebAssembly support
- Web Workers
- SharedArrayBuffer (for FFmpeg)
License
MIT License - see LICENSE for details.