ShadowCat – file transfer through QR Codes in a Browser

ShadowCat is a browser-based devtool that enables file transfer by encoding data into a sequence of QR codes, allowing users to move files between devices without a network connection. It is designed for developers and security-conscious users who need a quick, air-gapped transfer method in environments where cables or cloud services are unavailable. Its novelty lies in repurposing QR codes as a functional data channel, turning a visual medium into a practical, offline file-sharing solution.