WebTorrent is a streaming torrent client library for the browser and Node.js, enabling peer-to-peer file sharing and media streaming in web applications without plugins.

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🚀 Overview

WebTorrent is a JavaScript implementation of a BitTorrent client that runs in browsers and Node.js, using WebRTC for peer-to-peer connections in the browser. It allows developers to stream torrents directly into HTML5 video/audio elements and access files as streams, supporting magnet URIs, DHT, trackers, and more.

This project solves the challenge of bringing BitTorrent to browsers, where traditional clients can't run due to sandboxing and lack of UDP/TCP support. By leveraging WebRTC data channels, it enables plugin-free P2P file sharing across websites. It's built for web developers creating decentralized apps, content streamers, and anyone wanting serverless file distribution.

Created by Feross Aboukhadijeh to pioneer web-based P2P, it powers tools like WebTorrent Desktop and demos like Instant.io, fostering a unified P2P web.

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✨ Key Features

• Streaming torrent files directly in the browser with HTML5 <video> and <audio> tags for instant playback
• Full BitTorrent protocol support including magnet URIs, DHT peer discovery, trackers, LSD, uTP, and extensions like ut_metadata and ut_pex
• Dual runtime: Same API works in Node.js (UDP/TCP) and browsers (WebRTC)
• Files exposed as readable streams for easy integration with web apps
• Optional: Protocol extension API for custom features, ongoing browser compatibility enhancements

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🛠 Tech Stack

• Core: JavaScript (99.8%), WebRTC data channels (browser), bittorrent-protocol, bittorrent-dht, etc.
• Build tools: Browserify, Webpack for browser bundles
• No backend/database as it's a client-side library
• No auth required
• Hosting: npm, GitHub, jsDelivr CDN

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👥 Who Is This For?

This project is useful for:

• Developers who want to integrate P2P torrent streaming into web apps
• Teams looking for decentralized, serverless content delivery networks
• Indie makers building browser-based file sharing and media players

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📸 Screenshots / Demo

• Live demo: https://instant.io
• GitHub: https://github.com/webtorrent/webtorrent

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🔥 Project Status

• 🟢 Actively building

Last updated: 2026-03-24

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❓ FAQ

Is this project free?

Yes / Open Source (MIT License) (100% free to use, no paid tiers.)

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Is the source code available?

Yes — https://github.com/webtorrent/webtorrent

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Can I contribute?

Report issues on GitHub, submit pull requests following the CONTRIBUTING.md guide, or join the Gitter chat at https://gitter.im/webtorrent/webtorrent.

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📬 Contact & Links

• Website: https://webtorrent.io
• GitHub: https://github.com/webtorrent/webtorrent
• Twitter/X: https://twitter.com/feross (project author)
• Email: Not listed; use GitHub issues or Gitter

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