cdnjs is Simple. Fast. Reliable. Content delivery at its finest.
cdnjs is a free and open-source CDN service trusted by over 10% of websites, powered by Cloudflare.
We make it faster and easier to load library files on your websites.
Client Socket.io bundle from a CDN
<script src="https://cdn.socket.io/socket.io-3.0.1.min.js"></script>