WorkerGlobalScope: fonts property

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since September 2022.

See full compatibility

Note: This feature is only available in Web Workers.

The fonts property of the WorkerGlobalScope interface returns the FontFaceSet interface of the worker.

This property is part of the CSS Font Loading API.

Value

The returned value is the FontFaceSet interface of the worker. The FontFaceSet interface is useful for loading new fonts, checking the status of previously loaded fonts etc.

Examples

Doing operation after all fonts are loaded

fonts.ready.then(() => {
  // Any operation that needs to be done only after all the fonts
  // have finished loading can go here.
});

Specifications

Specification
CSS Font Loading Module Level 3 # dom-fontfacesource-fonts

Browser compatibility

	desktop					mobile
	Chrome	Edge	Firefox	Opera	Safari	Chrome Android	Firefox for Android	Opera Android	Safari on iOS	Samsung Internet	WebView Android	WebView on iOS
`fonts`	Chrome – Full support Chrome 69 (Release date: 2018-09-04) footnote Full support	Edge – Full support Edge 79 (Release date: 2020-01-15) footnote Full support	Firefox – Full support Firefox 105 (Release date: 2022-09-20) footnote Full support	Opera – Full support Opera 56 (Release date: 2018-09-25) footnote Full support	Safari – Full support Safari 15 (Release date: 2021-09-20) footnote Full support	Chrome Android – Full support Chrome Android 69 (Release date: 2018-09-04) footnote Full support	Firefox for Android – Full support Firefox for Android 105 (Release date: 2022-09-20) footnote Full support	Opera Android – Full support Opera Android 48 (Release date: 2018-11-08) footnote Full support	Safari on iOS – Full support Safari on iOS 15 (Release date: 2021-09-20) footnote Full support	Samsung Internet – Full support Samsung Internet 10 (Release date: 2019-08-22) footnote Full support	WebView Android – Full support WebView Android 69 (Release date: 2018-09-04) footnote Full support	WebView on iOS – Full support WebView on iOS 15 (Release date: 2021-09-20) footnote Full support

Tip: you can click/tap on a cell for more information.

Full support: Full support