Web Font Display

WebFont Display plugin will find all Google Fonts and font-awsome fonts in a webpage and set its font-display to swap property in your theme.

If anyone add custom fonts using @font-face property into css file then they need to add this property into @font-face{font-display:swap;} css manually.

By default browser will wait until the Google Fonts are downloaded to display the font. This is the reason for the error ‘ensure text remains visible during webfont load’ in Google PageSpeed Insights

Luckily Google Fonts now supports setting font-display via a new query parameter. By setting font-display to swap, the browser uses the fallback font and when downloading actual font is complete, it just swaps the font!

Note: Plugin can’t add font-display: swap to dynamically (via JS) injected Google Fonts

Just install the plugin and active it. No further configuration is needed.

You can use below mentioned css into your @font-face{font-display:swap}.

This plugin is not working for my font-awesome
For that please check your font-awesome file is properly registered or not
For example: wp_enqueue_style( ‘font-awesome’, get_stylesheet_directory_uri() . ‘/font-awesome/css/font-awesome.min.css’, array() );