raptorqr

Pick a file, or use the sample.

Aiming a webcam? ⛶ fullscreen fills the screen with nothing on top of the code; Esc comes back. Fill the camera frame with the code. Fewer modules reads more easily than more — lower bytes/frame until it locks, then raise it.

Loopback feeds the sender canvas straight in, padded with the chosen surround, no optics. It proves the codec end to end. For the real thing, aim the webcam at the code.