This feature is well established and works across many devices and browser versions. It’s been available across browsers since January 2020.
Note: This feature is available in Web Workers.
The size property of the FontFaceSet interface returns the number of items in the FontFaceSet.
An integer indicating the number of items in the FontFaceSet.
In the following example the size of the FontFaceSet is printed to the console.
console.log(document.fonts.size);
| Desktop | Mobile | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Opera | Safari | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | WebView Android | WebView on iOS | |
size |
35 | 79 | 41 | 22 | 10 | 35 | 41 | 22 | 10 | 3.0 | 37 | 10 |
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https://developer.mozilla.org/en-US/docs/Web/API/FontFaceSet/size