webtorrent/instant.io

πŸš€ Streaming file transfer over WebTorrent (torrents on the web)

3,594

stars

606

commits

JavaScript

primary language

Sep 9, 2026

updated

instant.io
bittorrent
javascript
nodejs
p2p
streaming
webrtc
webtorrent

README

Instant.io

Streaming file transfer over WebTorrent (torrents on the web)

travis javascript style guide

Download/upload files using the WebTorrent protocol (BitTorrent over WebRTC). This is a beta.

Powered by WebTorrent, the first torrent client that works in the browser without plugins. WebTorrent is powered by JavaScript and WebRTC. Supports Chrome, Firefox, Opera (desktop and Android). Run localStorage.debug = '*' in the console and refresh to get detailed log output.

Install

If you just want to do file transfer on your site, or fetch/seed files over WebTorrent, then there's no need to run a copy of instant.io on your own server. Just use the WebTorrent script directly. You can learn more at https://webtorrent.io.

The client-side code that instant.io uses is here.

Run a copy of this site on your own server

To get a clone of https://instant.io running on your own server, follow these instructions.

Get the code:

git clone https://github.com/webtorrent/instant.io
cd instant.io
npm install

Modify the configuration options in config.js to set the IP/port you want the server to listen on.

Copy secret/index-sample.js to secret/index.js and update the options in there to a valid TURN server if you want a NAT traversal service (to help peers connect when behind a firewall).

To start the server, run npm run build && npm start. That should be it!

Tips

  1. Create a shareable link by adding a torrent infohash or magnet link to the end of the URL. For example: https://instant.io#INFO_HASH or https://instant.io/#MAGNET_LINK.

  2. You can add multiple torrents in the same browser window.

License

MIT. Copyright (c) WebTorrent, LLC.

Contributors

(top 30 of 32)

feross

421 commits

renovate[bot]

91 commits

renovate-bot

33 commits

webtorrent/instant.io

πŸš€ Streaming file transfer over WebTorrent (torrents on the web)

3,594

stars

606

commits

JavaScript

primary language

Sep 9, 2026

updated

instant.io
bittorrent
javascript
nodejs
p2p
streaming
webrtc
webtorrent

README

Instant.io

Streaming file transfer over WebTorrent (torrents on the web)

travis javascript style guide

Download/upload files using the WebTorrent protocol (BitTorrent over WebRTC). This is a beta.

Powered by WebTorrent, the first torrent client that works in the browser without plugins. WebTorrent is powered by JavaScript and WebRTC. Supports Chrome, Firefox, Opera (desktop and Android). Run localStorage.debug = '*' in the console and refresh to get detailed log output.

Install

If you just want to do file transfer on your site, or fetch/seed files over WebTorrent, then there's no need to run a copy of instant.io on your own server. Just use the WebTorrent script directly. You can learn more at https://webtorrent.io.

The client-side code that instant.io uses is here.

Run a copy of this site on your own server

To get a clone of https://instant.io running on your own server, follow these instructions.

Get the code:

git clone https://github.com/webtorrent/instant.io
cd instant.io
npm install

Modify the configuration options in config.js to set the IP/port you want the server to listen on.

Copy secret/index-sample.js to secret/index.js and update the options in there to a valid TURN server if you want a NAT traversal service (to help peers connect when behind a firewall).

To start the server, run npm run build && npm start. That should be it!

Tips

  1. Create a shareable link by adding a torrent infohash or magnet link to the end of the URL. For example: https://instant.io#INFO_HASH or https://instant.io/#MAGNET_LINK.

  2. You can add multiple torrents in the same browser window.

License

MIT. Copyright (c) WebTorrent, LLC.

Contributors

(top 30 of 32)

feross

421 commits

renovate[bot]

91 commits

renovate-bot

33 commits

Languages

JavaScript

72.3%

Pug

11.5%

Shell

8.6%

Stylus

7.6%