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Practical notes on website performance, SEO, conversion and building software that lasts.

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Core Web Vitals: what actually moves the needle
20 Aug 2026

Core Web Vitals: what actually moves the needle

LCP, INP and CLS in plain terms, plus the short list of changes that delivers most of the gains on a typical site.
Mobile app performance: the metrics that actually matter
31 Jul 2026

Mobile app performance: the metrics that actually matter

Cold start, time to interactive, jank, network efficiency and battery. What to measure on real mid-range devices, and the fixes that move each number.