Air-Gapped Optical File Transfer
High-speed, 100% vanilla JavaScript screen-to-camera file modem. Zero dependencies, zero WASM, zero network required.
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Send a File
Display your file on screen as high-speed RGB macro-cell frames with systematic fountain coding.
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Receive a File
Use your phone or webcam to scan the screen and reconstruct the file bit-for-bit.
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Simulator Loopback
Test the full TX-to-RX pipeline in-browser with synthetic camera noise, blur, and rolling shutter tears.
Browser Capabilities
Detecting features...