For most of the past decade, I have spent a considerable fraction of my professional life consulting with teams building on the web. It is not going well. Not only are new services being built to a self-defeatingly low UX and performance standard, existing experiences are pervasively re-developed on...

TL;DR: To serve users at the 75th percentile (P75) of devices and networks, we can now afford ~150KiB of HTML/CSS/fonts and ~300-350KiB of JavaScript (gzipped). This is a slight improvement on last year's budgets, thanks to device and network improvements. Meanwhile, sites continue to send more scri...

Gentle reader, I made a terrible mistake. Yes, that's right: I read the comments on a MacRumors article. At my age, one knows better. And yet. As penance for this error, and for being short with Miguel, I must deconstruct the ways Apple has undermined browser engine diversity. Contrary to claims of ...

Since 2015 I have been lucky to collaborate with more than a hundred teams building PWAs and consult on some of the world's largest sites. Engineers and managers on these teams universally want to deliver great experiences and have many questions about how to approach common challenges. Thankfully, ...