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JavaScriptintermediatewebAI generated

Real-time Collaborative Whiteboard

A web app where multiple users draw on a shared canvas in real time, with strokes synchronized instantly across all connected clients via Socket.IO. Learners practice canvas drawing APIs, WebSocket-based real-time sync, and handling concurrent client state.

Estimate
~9h
Steps
5
Completed by
0
Proposed by
codeseed.app

Socket.IO · Canvas API · Express

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Project roadmap

  1. 01

    Build the drawable canvas

    ~1.5h

    Create an HTML canvas that captures pointer events and builds stroke paths.

  2. 02

    Set up Socket.IO

    ~2h

    Set up a Socket.IO server that broadcasts stroke events to all connected clients.

  3. 03

    Render remote strokes

    ~2h

    Receive stroke events from other users and render them onto the local canvas in real time.

  4. 04

    Add drawing controls

    ~1.5h

    Add a color picker, brush size control, and a clear-board action synced to all clients.

  5. 05

    Add room support

    ~2h

    Support separate whiteboard sessions via rooms so unrelated users don't share a canvas.

Resources

Ready to build this?

Get a GitHub repo and start building. Your AI reviewer checks each step as you go.

~9h · 5 steps

Tech stack

Socket.IOCanvas APIExpress