LAN File Transfer
Secure, fast peer-to-peer file sharing
Powered by WebRTC peer-to-peer transfer with DTLS encryption, file content is not relayed by the server; connections use local/private candidates only and reject TURN relays. With SAS short-code verification and an account-free flow, you can pair quickly via short codes on the same network.
Create Session
Send files or text to other devices
Join Session
Scan QR code or enter room code to receive files
Usage
Security
File content is transferred peer-to-peer via WebRTC with DTLS encryption, without being relayed by the server. Establishing a connection requires exchanging pairing information, either through a signaling server (WebSocket) or via offline QR-code pairing. Offline mode supports SAS short-code verification to help identify potential MITM risks.
Network requirements
Sender and receiver must be on the same local network (Wi‑Fi or wired). For the best throughput, connect both devices to the same Wi‑Fi and the same band (prefer 5GHz), avoid mixing 5GHz ↔ 2.4GHz, and stay close to the router or use wired Ethernet.
Browser support
Supported on modern browsers: Chrome, Edge, Firefox, Safari.
Secure and fast LAN sharing in detail
Dive into the architecture choices, SAS verification flow, and performance tuning behind WeFreeStar's LAN file transfer.
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