LAN transfer: room code + WebRTC data channel
Create a room, join from another device, then send files peer-to-peer.
Related
See other developer tools.
Use the workspace above to create or join a room.
LAN Transfer
Room code + WebRTC peer file transfer with short-lived signaling.
LAN File Transfer
Create a room code, open this page on another device, then transfer files peer-to-peer. Signaling uses this site; file bytes go device-to-device when WebRTC connects.
Room code
—
Not connected
Speed：—
QR (join link)
Create a room to show QR
Status
Ready
- Same Wi-Fi / LAN is more reliable.
- Keep both tabs open until transfer finishes.
- If blocked by network, use Manual SDP paste below.
Drop files to send after peers connect
Outgoing / queue
Received files
Manual WebRTC fallback (SDP paste)
When room signaling fails, paste offer/answer between devices.
What can you do with it?
Send large files nearby
Phone ↔ laptop without cloud drives
Ad-hoc collaboration
Drop assets during meetings
Peer data path
File bytes stay off app storage when WebRTC connects
Simple room codes
Six-character codes start a session
Multi-file queue
Send multiple files back-to-back
Manual SDP fallback
Paste offer/answer if signaling is blocked
Why choose this tool?
Room signaling
Site relays SDP/ICE only
Progress UI
Track send/receive progress
Save locally
Receiver downloads immediately
Short-lived rooms
Stale rooms expire automatically
How to use?
1
Create a room
Share the code with the other device
2
Join on the peer
Enter the code and wait for connect
3
Send files
Drop files after the channel opens
FAQ
- Do files hit your servers?
- Only signaling (SDP/ICE) is relayed briefly. File bytes transfer peer-to-peer over WebRTC when connected.
- Same Wi-Fi required?
- Same LAN is most reliable. Cross-network depends on NAT/firewall.
- Cannot connect?
- Some networks block WebRTC. Keep both tabs open or use manual SDP.
- Do room codes last forever?
- No. Inactive rooms expire; create a new one.