CSS Font Loading API

This is an experimental technology
Because this technology's specification has not stabilized, check the compatibility table for usage in various browsers. Also note that the syntax and behavior of an experimental technology is subject to change in future versions of browsers as the specification changes.

The CSS Font Loading API provides events and interfaces for dynamically loading font resources.


Represents a single usable font face.
An interface loading font faces and checking their download statuses.
An mixing providing all of the fonts used in font-related operations, unless defined otherwise. It defines the FontFaceSources.fonts property available to Document and WorkerGlobalScope.
Fired whenever a FontFaceSet loads.


Specification Status Comment
CSS Font Loading Module Level 3 Working Draft Initial definition.

Browser compatibility

Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari (WebKit)
Basic support 35.0 41 (41) ? 22 ?
Feature Android Webview Chrome for Android Firefox Mobile (Gecko) Firefox OS IE Mobile Opera Mobile Safari Mobile
Basic support No support 35.0 41.0 (41) ? ? 22 ?

Document Tags and Contributors

 Contributors to this page: fscholz, jpmedley, rolfedh, teoli, Sebastianz
 Last updated by: fscholz,