Posted 5 April, 2017
Here is a quick reminder of how to make variable fonts work in all three of the main Mac browsers: Safari, Chrome and Firefox.
This is an ultra-condensed version of a piece that I’ll post after the TYPO Labs conference. The major browser vendors will update us there on progress, and let us know what’s happening with variable fonts on Windows, Linux and Android. UPDATE: Here is the longer piece.
UPDATE 2017-09-25 Variable fonts are supported fully in Safari 11 when running on macOS 10.13 High Sierra and on iOS 11. In other words, with an up-to-date Mac or iOS device, variable fonts work well in Safari.
UPDATE 2017-06-28 Support for variable fonts has been removed from preview versions of Safari (Safari Technology Preview and WebKit Nightly) when running current macOS 10.12 Sierra. These browsers work fine with the Public Beta of macOS 10.13 High Sierra, which is available under the Apple Beta Software Program. Variable font support is planned to be on by default in macOS 10.13.
UPDATE 2017-09-20 Variable fonts now work in Chrome v62 Beta without further configuration. Release scheduled for October 17.
UPDATE 2017-09-10 From early August 2017, variable fonts work in Chrome Canary without further configuration.
Your browser appears to be incompatible with variable fonts.
To get started with variable fonts, install the latest version of Google Chrome. On a Mac running macOS 10.13 High Sierra, you can also use Safari.