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QuickShare-QR lets developers transfer files to phones via terminal QR codes

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A developer has built QuickShare-QR, an open-source Node.js CLI tool that enables instant local file transfers from a computer to a smartphone without cloud services. The tool spins up a temporary HTTP server on the local network, generates a scannable ASCII QR code in the terminal, and begins streaming the file as soon as the phone's camera scans it. Files never leave the local Wi-Fi network, with transfer speeds reaching up to 80 MB/s depending on bandwidth. Security features include path confinement against directory traversal attacks, dynamic ephemeral ports, and optional single-use tokens to restrict download access. The tool requires no permanent installation and can be run directly via npx, with the server automatically shutting down once the transfer completes.

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