LargestContentfulPaint.size

The size read-only property of the LargestContentfulPaint interface returns the intrinsic size of the element that is the largest contentful paint.

The size of the element is the width times height of the rectangle that this element creates on the screen.

Syntax

let size = LargestContentfulPaint.size;

Value

An integer representing the width times height of the element.

Examples

The following example gets the LargestContentfulPaint object and prints the value of size to the console.

try {
  let lcp;

  const po = new PerformanceObserver((entryList) => {
    const entries = entryList.getEntries();
    const lastEntry = entries[entries.length - 1];
    console.log(lastEntry.size);
  });

  po.observe({type: 'largest-contentful-paint', buffered: true});

} catch (e) {
  // Do nothing if the browser doesn't support this API.
}

Specifications

Browser compatibility

Desktop Mobile
Chrome Edge Firefox Internet Explorer Opera Safari WebView Android Chrome Android Firefox for Android Opera Android Safari on IOS Samsung Internet
size
77
79
No
No
Yes
No
77
77
No
Yes
No
12.0

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https://developer.mozilla.org/en-US/docs/Web/API/LargestContentfulPaint/size