Web Vitals

LCP, INP, CLS, and measuring real-user experience.

Delaying all JavaScript is not optimisation, it just moves the problem

21 Sept 2026 — One checkbox in a caching plugin can lift a Lighthouse score by tens of points without making a site faster for anyone. Here is which WordPress plugins ship that checkbox, what their own documentation admits, and how to spot it on your site.

WebP images: the leaner alternative to JPEG, PNG, and GIF

7 Jul 2024 — WebP cuts image weight versus JPEG and PNG, adds transparency and animation, and ships everywhere. When it pays off and how to serve it safely.

Web Vitals: Google's core metrics for real-world speed

2 Jun 2020 — An introduction to Core Web Vitals — LCP, INP, CLS — how Google uses them, and where to measure them on your site.