JW Converter
A local-first Windows application for converting audio and images. It supports batch processing, preserves folder structures, and offers quality presets, all running securely on your PC without cloud uploads.
Design & development
problem
Users often require a reliable, private tool for converting various audio and image formats without relying on online services, creating accounts, or compromising data privacy. Existing solutions may lack comprehensive format support, robust batch processing, or the assurance of local-only operation.
process
Developed as a local-first Windows application using Tauri 2 with a React/TypeScript frontend and a Rust backend. It leverages FFmpeg/FFprobe for audio processing and ImageMagick for image conversions. The architecture routes UI commands through Tauri IPC to a Rust conversion engine, which manages media processing and ensures safe file operations (temp → verify → finalize).
result
Shipped as a user-friendly Windows installer, JW Converter enables efficient conversion of major audio formats (FLAC, WAV, MP3, M4A, etc.) and image formats (JPEG, PNG, WebP, TIFF, RAW, etc.). It features recursive folder scanning, quality/compression/resize presets, metadata preservation, and in-app updates, ensuring a secure and private conversion experience entirely on the user's machine.