Web performance is a tricky beast, isn’t it? How do we actually know where we stand in terms of performance, and what exactly our performance bottlenecks are? Is it expensive JavaScript, slow web font delivery, heavy images, or sluggish rendering? Have we optimized enough with tree-shaking, scope hoisting, code-splitting, and all the fancy loading patterns with intersection observer, progressive hydration, clients hints, HTTP/3, service workers and — oh my — edge workers?
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