The ClipboardItem() constructor of the Clipboard API creates a new ClipboardItem object which represents data to be stored or retrieved via the Clipboard API, that is clipboard.write() and clipboard.read() respectively.

data

An Object with the MIME type as the key and data as the value. The data can be represented as a Blob, a String or a Promise which resolves to either a blob or string.

options Optional

An object with the following properties:

presentationStyle Optional

One of the three strings: unspecified, inline or attachment. The default is unspecified.

The below example requests a png image using the Fetch API, and in turn, the responses' blob() method, to create a new ClipboardItem. This item is then written to the clipboard, using the Clipboard.write() method.

async function writeClipImg() {
  try {
    const imgURL = "/myimage.png";
    const data = await fetch(imgURL);
    const blob = await data.blob();

    await navigator.clipboard.write([
      new ClipboardItem({
        [blob.type]: blob,
      }),
    ]);
    console.log("Fetched image copied.");
  } catch (err) {
    console.error(err.name, err.message);
  }
}

• Clipboard API
• Async Clipboard API demo on Glitch
• Image support for Async Clipboard article