When JavaScript Bytes

A presentation at performance.now() in in Amsterdam, Netherlands by Tim Kadlec

JavaScript is, byte-for-byte, the most expensive resource on the web and we’re using more of it than ever in our sites. You can optimize the delivery, the parsing and the execution until you’re blue in the face but you’ll never make it as performant as simply not using it in the first place.

But what do you do if you’re already staring down a pile of scripts?

In this talk, we’ll discuss practical ways to reduce the amount of JavaScript we’re sending down to the people using our sites. We’ll look at techniques for shaving excess bytes off our bundles and, just as critically, tools and approaches we can use to make sure those bytes stay off.

Buzz and feedback

Here’s what was said about this presentation on Twitter.