Web Performance Optimization: Core Web Vitals and Beyond Every 100 milliseconds of added load time costs you conversions. That's not a guess -- it's been measured repeatedly by Google, Amazon, Walmart, and everyone else with enough traffic to run the...
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Tiffany Spark
Web designer in London. Clean code, good design, strong coffee.
the point about a page that scores 100 on Lighthouse but feels janky being worse than a page that scores 85 but responds instantly is something i wish more people understood. i have started leading every client call with their current PageSpeed score and it genuinely changes the conversation about why performance matters. the INP section is particularly useful — i had not properly got my head around why it replaced FID until reading this.