This is an experimental technology
Check the Browser compatibility table carefully before using this in production.

The FontFaceSetLoadEvent constructor creates a new FontFaceLoadEvent object which is fired whenever a FontFaceSet loads.


var fontFaceSetLoadEvent = new FontFaceSetLoadEvent(type[, options])


The literal value 'Type' (quotation marks included).
options Optional
Options are as follows:
  • fontfaces: An array of FontFace instances.


Specification Status Comment
CSS Font Loading Module Level 3
The definition of 'FontFaceSetLoadEvent()' in that specification.
Working Draft Initial definition.

Browser Compatibility

Update compatibility data on GitHub
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidFirefox for AndroidOpera for AndroidSafari on iOSSamsung Internet
FontFaceSetLoadEvent() constructor
Chrome Full support 57Edge Full support ≤79Firefox ? IE ? Opera Full support 44Safari ? WebView Android No support NoChrome Android Full support 57Firefox Android ? Opera Android Full support 43Safari iOS ? Samsung Internet Android Full support 7.0


Full support  
Full support
No support  
No support
Compatibility unknown  
Compatibility unknown
Experimental. Expect behavior to change in the future.
Experimental. Expect behavior to change in the future.