Transfer.coffee Peer-to-peer file sharing

by jupfi, published 2025-05-30 17:00:00

Have you ever been annoyed by one of your colleagues sending you links to WeTransfer and the likes for sharing files? Then you had to suffer through huge ad banners that companies will actually advertise as the most notable on the internet [1].

Worry no longer - private.coffee has got you covered. Transfer.coffee is a simple web application that allows users to share files. It's really easy to use and ad-free:

  1. Upload your file to the Transfer.coffee web interface
  2. Transfer.coffee generates a simple mnemonic seed (a series of easy-to-remember words)
  3. Share this seed with your recipient
  4. They enter the seed on Transfer.coffee to download the file directly from your device

The files are shared using WebTorrent, a peer-to-peer file sharing protocol [2]. This means that the files are not stored on a central server and are instead shared directly between the sender and the recipient.

You can find the source code here, including some instructions on how to host your own instance!

This post by jupfi is licensed under the CC BY-SA 4.0.