Send large files for free, without uploading them

How to send a large file in three steps

1. 1 Open Transferinho and click “Start room”. A private room with its own secret key is created instantly.
2. 2 On the receiving device, scan the QR code or open the room link you shared.
3. 3 Drop one or more files. The receiver accepts each one and it streams straight across, with live progress, speed and time remaining on both sides.

Why a direct transfer is faster for big files

With a cloud service the file travels twice: up to a server, then down to the recipient — and the recipient can’t start until your whole upload has finished. With a peer-to-peer transfer the receiver gets each chunk the moment you send it, so the total time is roughly halved.

When both devices are on the same network, the connection usually stays inside that network, so the transfer runs at the speed of your Wi-Fi or Ethernet instead of your internet upload speed.

Is there really no size limit?

Transferinho doesn’t impose one. Files are read and written in 64 KB chunks, so memory use stays flat whether you send 50 MB or 50 GB.

• Chrome and Edge on a computer write directly into the file you choose, before the transfer starts.
• Firefox, Safari on Mac and browsers on Android stream the file into your downloads folder.
• iPhone and iPad are the exception: Safari has to hold a received file in memory before saving it, so very large files may not arrive there. Sending from an iPhone is not affected.

Tips for very big transfers

• Keep both tabs open and, on phones, in the foreground — mobile browsers may pause background tabs.
• Plug laptops in and stop them from going to sleep during long transfers.
• Use the same Wi-Fi or a cable network when you can; it is by far the fastest path.
• Folders aren’t supported yet — zip a folder first, which also makes thousands of small files faster to send.
• You can queue several files at once, in both directions.

Frequently asked questions