FastSend is a web tool for encrypted file transfers using your browser's ‘peer-to-peer’ encryption. Your file data does not pass through third-party servers, ensuring privacy and security, and accordingly, requires the sender to be online during the transfer. You can download its APP if you want.
FastSend uses WebRTC to provide peer-to-peer data transfer and Modern File Access API to provide direct file system read/write, so please make sure that your browser has WebRTC enabled and Modern File Access API is optional, as its unavailability will result in transferring file size limitations and non-receivable directories. WebRTC traverses all feasible networks and automatically selects the optimal route, if both the sender and receiver are on the same LAN, it will automatically select the best route. If both the sender and the receiver are on the same LAN, the transmission will automatically go to the LAN and will not consume external traffic.
