File Beam — Send Files Between Devices on Same Wi-Fi

File Beam creates a direct peer-to-peer connection between two devices using WebRTC — the same technology that powers video calls in browsers. No cloud storage, no upload servers, and no account are needed. Files travel straight from one device to the other.

Step-by-Step Guide

1. Create a connection link: Click "Create connection link" and you'll get a shareable URL.
2. Share the link: Send the link to the other device via any messaging app, email, or QR code.
3. Other device opens the link: The page auto-detects the connection and generates an answer link.
4. Send the answer link back: The other device shares its answer link back to you.
5. Paste or open the answer link: Paste it into the input field, or open it in the same tab. The connection completes automatically.
6. Transfer files both ways: Once connected, both devices can drag and drop files to send. Files stream in chunks with real-time progress.

Bidirectional Transfer

Unlike most file-sharing tools, File Beam is bidirectional — once connected, both devices can send and receive files simultaneously. There's no "sender" and "receiver" role after connection; both sides can drop files into the transfer zone at any time.

No File Size Limit

Files are streamed in small chunks over the WebRTC data channel rather than loaded into memory all at once. This means there is no file size limit — you can transfer multi-gigabyte files if your network can handle it. In Chrome and Edge, you can choose a save folder so incoming files stream directly to disk without using device memory.

Privacy

Files are transferred directly between the two devices using an encrypted WebRTC data channel. No file data is ever sent to any server. The only external request is to Google's public STUN servers, which help the devices discover each other's network addresses — this is standard WebRTC infrastructure and no file content passes through it. Once you disconnect, all data is cleared from memory.

Tips for Best Results

• Keep both devices on the same Wi-Fi network for the fastest and most reliable transfer.
• Keep both browser tabs open and in the foreground during transfer — background tabs may be throttled.
• In Chrome or Edge, click "Choose save folder" so incoming files save directly to disk without using memory.
• If the connection fails, close both tabs and start fresh with a new connection link.