White board by WebRTC

Abstract	White board by WebRTC
Authors	Walter Fan
Status	v1.0
Category	LearningNote
Updated	2026-03-20

Overview

我们可以在 Web 页面上绘制各种图形，例如点，线，矩形，圆等，有几种方法可以将这些绘制的内容发送给其他用户。

1. 将绘制指令传送给其他用户

2. 将图像快照传送给其他用户

Example

• [Realtime collaborative drawing with canvas and WebRTC (part 1): SimplePeer, WebSockets and Canvas](https://dev.to/nyxtom/realtime-collaborative-drawing-with-canvas-and-webrtc-2d01)

Reference

• [Web Canvas API](https://developer.mozilla.org/en-US/docs/Web/API/Canvas_API)