LargestContentfulPaint: loadTime property

Baseline 2025

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Since December 2025, this feature works across the latest devices and browser versions. This feature might not work in older devices or browsers.

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The loadTime read-only property of the LargestContentfulPaint interface returns the time that the element was loaded.

Value

A timestamp representing the time in milliseconds that the element was loaded.

This example uses a PerformanceObserver notifying of new largest-contentful-paint performance entries as they are recorded in the browser's performance timeline. The buffered option is used to access entries from before the observer creation.

const observer = new PerformanceObserver((list) => {
  const entries = list.getEntries();
  const lastEntry = entries[entries.length - 1]; // Use the latest LCP candidate
  console.log(lastEntry.loadTime);
});
observer.observe({ type: "largest-contentful-paint", buffered: true });