About JustConvertRAW

JustConvertRAW is a free tool for converting RAW photo files directly in your browser. No uploads, no signups, no server processing — everything happens locally on your device.

Built with WebAssembly technology, JustConvertRAW uses the LibRaw library compiled to run natively in your browser at near-native speed. It supports over 1200 camera models across all major brands.

Whether you need to quickly convert a CR2 file from your Canon, a NEF from your Nikon, or a DNG from your phone, JustConvertRAW handles it instantly with full control over conversion settings.

Technology

The conversion engine is powered by librawjs, a custom WebAssembly build of LibRaw 0.22.1 compiled with Emscripten. It runs entirely client-side — no server required. The library supports full demosaic processing with multiple algorithms (AHD, VNG, PPG, DHT, and more), color space conversion, white balance correction, and metadata extraction.