QR File Transfer

Local/offline file transfer using a stream of one large QR code per frame. There is no artificial 500 MB cap; practical size is limited by available RAM because the sender prepares the file in memory.

Windows

1. Install Python 3.11+.
2. Run start.bat.
3. Open the printed PC URL on the computer and PHONE URL on the phone.
4. Choose Send on the computer and Receive on the phone.

Both devices must be on the same local network. The app does not upload files to a cloud service.

Speed

The sender cycles through frames and repeats the sequence. The receiver stores chunks by frame number, so missed or duplicate frames are harmless. Lower the frame delay only as far as the phone camera can reliably detect.