ConfPad

Everyone loves fast sites. While "make your site faster" is a simple mantra, the actual steps to achieve this can be daunting. Fortunately, we know where to start: JavaScript. JavaScript consumes twice as much CPU as loading, layout, and rendering combined. Byte-for-byte, JavaScript inflicts more delays on sites than any other resource, and yet the amount of…

Like it or not, a huge part of modern web development involves the use of third-party providers: fonts, analytics, ads, tracking, and more all have an impact of performance, and can leave us (or, more worryingly, our visitors) susceptible to performance degradation. In this talk, we'll take a look at unruly or uninvited (third-)party guests: how to detect th…

Perceived performance is not only about fast page loads and delivering the content as early as possible. It is also about all the interactions happening on an already loaded page. Even some of the most popular UI patterns can be a cause of frustration. Understanding what is happening under the browser's hood can help you delight users with a smooth experienc…

In this case study of soundslice.com, Adrian shares lots of performance tweaks he has used to make responsive sheet music layout perform well in web browsers.

Successfully, and efficiently, delivering a site to visitors involves a lot of moving parts. The server has to spit something out, which gets passed over the network to the requesting device. The browser takes over from there, coordinating with the device to try and deliver the page as quickly as possible. When things go well, we barely notice and if we're n…

Loading resources on the Web has always been a performance hurdle. Late discovery, contention and bloat caused it to be the common performance bottleneck. In recent years advances in protocols, browser behaviour and performance APIs improved resource loading significantly, but there’s still room to make it even faster. In this talk we will go over resource l…

There are a lot of books, articles, and online tutorials out there with fantastic advice on how to make your websites performant. It all seems easy in theory, but applying best practices to real-world code is anything but straightforward. Diagnosing and fixing frontend performance issues on a large legacy codebase is like being an archaeologist excavating th…

Webpage performance is a high priority for any site of scale today, but it can be easier to build a fast site than it is to maintain one. As a site's features and design evolves, its performance is often threatened for a number of reasons, making it hard to ensure fast, broad access to services. In this session, Scott will consider common conflicts between p…

Pinterest.com serves millions of requests per day internationally across a myriad of network conditions and devices. This is the story of how the web performance team tackled the task of gathering data, applied a strategic roadmap across the organization, prevented performance regression as developers shipped new features, executed on the best opportunities …