Web Design
Core Web Vitals Explained in Plain English
LCP, TBT and CLS sound technical, but they simply measure how fast and stable your website feels to visitors.
By Thomas Designs · Published · 4 min read
Loading speed (LCP)
How long it takes for the main content of your page to appear. Aim for under 2.5 seconds.
Responsiveness (TBT)
How long the page is frozen while it loads scripts. The lower the better — under 200 milliseconds is good.
Layout stability (CLS)
Whether things jump around as the page loads. A score under 0.1 means your layout stays put. Run our free website audit to see your own scores in under a minute.