After we understand how important Web Performance is and we’ve applied basic techniques, what’s next? In this session, we will cover extreme techniques that will blow your mind about Web Performance. New compression algorithms? New image formats? Client-Hints? HTTP/3? Let’s hack Web Performance. After quickly reviewing new metrics and goals, we will get deeply into advanced hacks to increase perception and performance on the web and PWAs, which leads to more conversion and better experience, which is especially important in emerging markets. We will cover the updated checklist of techniques to improve experience and perception, as well as recent additions and hacks, such as: the usage of HTTP/2 and HTTP/3, how to replace PNGs and JPEGs, HTTP Client Hints, better compression encoding algorithms available, browser prefetching, lazy loading new abilities, and how advanced techniques on top of Service Workers can help improve conversion and reduce user frustration. 

We will finally talk about how we usually underestimate the Web on mobile devices, and ideas on how to offer reactive web optimizations that will keep a consistent experience on different network types and devices.