Web performance guides
Plain, practical guides to Core Web Vitals and site speed: what the metrics mean, how to improve them, and how to keep your site fast once it is. Links to the official sources, and the occasional opinion.
Core Web Vitals, explained
What LCP, INP and CLS actually measure, the thresholds, lab vs field data, and whether they really affect SEO.
Read the guide →How to improve your Core Web Vitals
The fixes that move the numbers, ordered by impact, for LCP, INP and CLS, plus how to stop regressions coming back.
Read the guide →How to audit your website's performance
A repeatable method: choose the right pages, read field and lab data, prioritise fixes, and turn an audit into monitoring.
Read the guide →PerfHawk puts these guides into practice for you: it checks your Core Web Vitals every day, lab and field, mobile and desktop, and emails you when a page slows down.
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