FCP (first contentful paint)

RU: FCP (первая отрисовка контента)

First Contentful Paint: a browser performance metric that records the time from navigation start until the browser renders the first visible piece of DOM content — text, image, SVG, or non-white canvas. It is a Lighthouse diagnostic metric (not a Core Web Vital) that signals the page is loading; the target threshold is under 1.8 seconds.