High-quality QR Code generator library in Java, TypeScript/JavaScript, Python, Rust, C++, C.
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A pure javascript QR code reading library. This library takes in raw images and will locate, extract and parse any QR code found within.
HTML5 QR code scanner using your webcam
A secure, client-side tool to broadcast a signed Bitcoin (BTC) transaction from an air-gapped wallet. Fetch UTXOs, regenerate QR codes, and submit raw hex transactions safely.