Developer test page. Tests a direct, encrypted WebTransport connection from this browser to the WT Probe app on an iPhone on the same Wi-Fi. Nothing is sent to this website; results go only to the phone.
Firefox doesn't support a secure direct connection to your phone yet. To keep your transfer encrypted, open this page in Safari or Chrome.
Only do this on your home Wi-Fi or another network you trust. Without encryption, others on the same Wi-Fi could see the photos and videos you transfer. Don't use it on public or shared Wi-Fi, like in a café, hotel or office.
This browser has connected securely to your phone before, so it won't switch to an unencrypted connection. Something on this network may be blocking the secure one: try again on your home Wi-Fi.