Speculation rules for evil
You can use speculation rules to make your site feel faster. You can also use them to make other sites do work they didn’t ask for.
Performance
Speed is the first competency test
Speed isn’t just a technical metric. It’s one of the clearest places where the health of an organisation’s digital systems becomes measurable.
A complete guide to HTTP caching
Despite being so fundamental, caching is one of the most misunderstood aspects of web performance.
You’re loading fonts wrong (and it’s crippling your performance)
Fonts are one of the most visible, most powerful parts of the web. And yet: almost everyone gets them wrong.