CSS Font Loading API

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

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

We're converting our compatibility data into a machine-readable JSON format. This compatibility table still uses the old format, because we haven't yet converted the data it contains. Find out how you can help!

Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari (WebKit)
Basic support 35.0 41 (41) ? 22 10
Feature Android Webview Chrome for Android Firefox Mobile (Gecko) Firefox OS IE Mobile Opera Mobile Safari Mobile
Basic support 56.0 35.0 41.0 (41) ? ? 22 10

Document Tags and Contributors

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