Using SSE Instead Of WebSockets For Unidirectional Data Flow Over HTTP/2

Look, AMP, you’re either a tool for the open web, or you’re a tool for Google search. I don’t mind if you’re the latter, but please stop pretending you’re something else.

subfont – a command line tool to statically analyse your page in order to generate the most optimal web font subsets, then inject them into your page. Now listed on Perf Tooling.

How performance data is collected at Wikipedia

"Whenever performance testing AMP, keep in mind that a test from origin will include potentially suboptimal server settings like bad cache headers or missing image optimizations. Also the biggest speed gain (near instant load through prerendering) will not be reflected in commonly used performance tools and metrics."

"IntersectionObserver is a very straight-forward technology. It has a pretty good support in the modern browsers and if you want to implement it for browsers that still (or won’t at all) support it, of course, there is a polyfill for that. But all in all, this is a great technology that allows us to do all sorts of things related to detecting elements in a viewport while helping to achieve a really good performance boost."

"Quantum Render (or WebRender) is a major graphical system overhaul that’s coming to Firefox this year, and it promises hardware-accelerated painting of web content with huge performance wins."

No more requirejs calls in network!