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Real-time Collaboration (multiplayer text editor)

Let's see how you can add Multiplayer capabilities to your BlockNote setup, and allow real-time collaboration between users (similar to Google Docs):

text editing collaboration

Try the live demo on the homepage

BlockNote uses Yjs for this, and you can set it up with the collaboration option:

import * as Y from "yjs";
import { WebrtcProvider } from "y-webrtc";
// ...

const doc = new Y.Doc();

const provider = new WebrtcProvider("my-document-id", doc); // setup a yjs provider (explained below)
const editor = useBlockNote({
  // ...
  collaboration: {
    // The Yjs Provider responsible for transporting updates:
    // Where to store BlockNote data in the Y.Doc:
    fragment: doc.getXmlFragment("document-store"),
    // Information (name and color) for this user:
    user: {
      name: "My Username",
      color: "#ff0000",
  // ...

Yjs Providers

When a user edits the document, an incremental change (or "update") is captured and can be shared between users of your app. You can share these updates by setting up a Yjs Provider. In the snipped above, we use y-webrtc which shares updates over WebRTC (and BroadcastChannel), but you might be interested in different providers for production-ready use cases.

  • PartyKit A serverless provider that runs on Cloudflare
  • Hocuspocus open source and extensible Node.js server with pluggable storage (scales with Redis)
  • y-websocket provider that you can connect to your own websocket server
  • y-indexeddb for offline storage
  • y-webrtc transmits updates over WebRTC
  • Matrix-CRDT syncs updates over Matrix (experimental)
  • Nostr-CRDT syncs updates over Nostr (experimental)


For development purposes, you can use our Partykit server to test collaborative features. Replace the WebrtcProvider provider in the example below with a YPartyKitProvider:

// npm install y-partykit@beta
import YPartyKitProvider from "y-partykit/provider";

const provider = new YPartyKitProvider(
  // use a unique name as a "room" for your application:

To learn how to set up your own development / production servers, check out the PartyKit docs and the BlockNote + Partykit example.