Send files to one device or a whole group, with nothing uploaded.

1. 1

   Open a room with a code

   Click Get a code. You get an eight-character code, a link and a QR code. The code keeps the room open to new devices for 15 minutes, and you can extend it or close it any time.

2. 2

   Everyone else joins

   Everyone else types the code, opens the link, or scans the QR code with a phone camera. Up to 8 devices can join, and each connects directly.

3. 3

   Drop your files

   Drop files on any device, or send a short message or link to the room. Everyone downloads from whoever already has the pieces, then saves the file.

Most ways of sending a file to someone upload it to a company’s server first, and the other person downloads it from there. This tool skips the server. The two browsers find each other once, then the files go straight from one device to the other, the way a video call connects two people. Nothing is kept anywhere, so there is nothing to delete afterwards.

What it does

• Shares any number of files of any type with the whole room, with progress, speed and time left.
• Works both ways: once in the room, anyone can share.
• Sends short messages and links too, handy for getting a link from your laptop onto your phone.
• Gets faster with more people: a file is cut into pieces and devices that already hold a piece pass it on, so the sender uploads each piece about once and everyone else trades the rest between themselves.
• Joins with an eight-character code, a link or a QR code (open for 15 minutes), or by copy and paste with no server at all.
• Checks every piece against a fingerprint, shows whether the connection runs over your local network or the internet, and gives each pair a safety number to compare.

Limits, honestly

• Pages must stay open while files move. On a phone, keep the screen on. If the person who opened the room leaves, the others can keep trading what they have, but nobody new can join.
• A few networks block even relayed connections, such as some strict corporate firewalls and VPNs. Switching the VPN off, the same Wi-Fi or a phone hotspot nearly always works.
• Folders cannot be sent as they are. Zip them first.
• A room holds up to 9 devices. Speed depends on the connections involved, and the sender’s upload is shared with everyone until the others have pieces to trade. On the same Wi-Fi it is usually much faster than uploading and downloading.

What the server sees

Here is everything that leaves your device when you use this tool, and who gets it. With copy and paste pairing, the third row does not apply either: nothing reaches my server.

Your files and messages

Never. They travel device to device, encrypted.

The pairing code

Never. Your browser turns it into a key and a room number, and only the room number is sent.

Connection details (the network addresses the devices use to find each other)

Encrypted with the key from the code, so the server cannot read them. Kept only while the code is open (15 minutes unless the host extends it) and deleted when the host closes the code.

Your IP address

Seen by the host (Vercel) as with any web page. My server counts how many codes an address makes in an hour, to stop abuse, and forgets it after the hour.

Address lookup servers (STUN, run by Google and Cloudflare)

Your browser asks them for its public address so the other device can reach it. They see your IP address, nothing else.

A relay server (TURN), only if a direct path is blocked

Forwards your already-encrypted traffic between the devices. It sees that the two IP addresses are talking and how much, never the files, names or messages.

The full details are in the privacy policy.