A new collaborative sketching method on web browser

Canvas brings novel features to web interfaces, which enable designers can sketch directly on web pages. Collaborative sketching within browser is becoming realistic. However, current solutions are suffering couples of disadvantages: low performance, high latency, additional user account to authentication. Therefore, we present a new tool to provide high performance, low latency, and rich element collaborative sketching. Users can login with existing online account, and then both chatting and initialing a painter are allowed with contacts. We achieve this by exploiting XMPP (Extensible Messaging and Presence Protocol) for instance message; web sockets (an independent TCP-based protocol) for low latency sketching and web workers to offload heavy calculated sketching items to a new thread. We describe our technical solution as well as demonstrate example applications in everyday scenarios.