QR File Share
Send a file to a phone on the same Wi-Fi. The other phone scans once, then holds its reply up to this computer.
Processed locally in your browser. Nothing you enter is uploaded.
Choose a file and tap Share. The other phone scans the code with its camera, then holds that screen up to this computer. The file moves directly between them. Nothing is uploaded.
Paste a code instead
Choose the files, then create a code.