coderef

Custom formats for clipboard itemsLimited availability

The web prefix for ClipboardItem data types (also known as MIME types) allows reading and writing unsanitized custom data from the device clipboard.

Not yet supported in all major browsers — check the table and provide a fallback.

How to use ↓Compare browsers

Browser support

DesktopChrome
1–103Not supported
104+Supportedsince Aug 2, 2022
Current: 155
Edge
12–103Not supported
104+Supportedsince Aug 5, 2022
Current: 154
Firefox
✕Not supportedup to 157
Current: 157
Safari
✕Not supportedup to 27
Current: 27
MobileChrome Android
18–103Not supported
104+Supportedsince Aug 2, 2022
Current: 155
Firefox Android
✕Not supportedup to 157
Current: 157
Safari iOS
✕Not supportedup to 27
Current: 27

How to use

Not supported in Firefox, Safari, Firefox Android, Safari iOS. Use feature detection below and provide a fallback (or a polyfill) for those browsers.

Example

Full syntax and examples are on MDN — see the links below.

Feature detection

JS · check before using
if ("ClipboardItem" in globalThis && "type_web" in ClipboardItem.prototype) {
  // ClipboardItem.type_web is available
}

Specification