Measurement
FCP (First Contentful Paint)
First Contentful Paint (FCP) is a Core Web Vitals-adjacent performance metric that marks the time from page navigation to when the browser renders the first piece of DOM content — text, image, non-white canvas, or SVG. Google considers FCP as an important user-centric performance milestone, with a "good" threshold under 1.8 seconds.
FCP is measured by Google Lighthouse, Google PageSpeed Insights, Chrome DevTools, and reported in the Chrome UX Report (CrUX) dataset. Google Search Console's Core Web Vitals report shows real-world FCP data segmented by mobile and desktop, helping prioritize speed optimization efforts.
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Related Terms
Measurement
DCL (DOM Content Loaded)
Refers to the time frame from entering a web page to the loading of the content.
Measurement
FID (First Input Delay)
Refers to the metric that represents how quickly a response is given when an action is requested after the page is loaded.
Measurement
FMP (First Meaningful Paint)
The metric representing the time it takes for a page's primary content to appear on the screen.
Measurement
TTFB (Time to First Byte)
Refers to the time between the browser requesting a page and when it receives the first byte of information from the server.