Google Font display swap

Hello,
I came across your blog post “Google Font display swap in Autoptimize?” here: https://blog.futtta.be/2019/05/24/google-font-display-swap-in-autoptimize/ and I wonder if such feature would be compatible with the “Combine and load fonts asynchronously with webfont.js” option.
If so,
– Could you tell approximately when such option will be available?
– In the meanwhile, any advice in order to implement the following code?

add_filter('autoptimize_filter_extra_gfont_fontstring','add_display');
function add_display($in) {
  return $in.'&display=swap';
}

It is not meant to be put into functions.php, is it?

Anyway, as said before in another support topic, thanks a lot for your amazing plugins and contributions!

Best,

• This topic was modified 5 years, 3 months ago by Motionous.