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How WordPress default themes add Google Fonts

I spent some time diving into Twenty Seventeen in preparation to develop for the theme directory. I was curious as to how the developers of very popular theme would enqueue a Google Font. I am no stranger to using a @import tag in the stylesheet, but I assumed there had to be a more sustainable solution. What I found was a thoughtful way of adding a font which I have digested into a gist below.

Handling your Google Fonts in this manner allows translators of your theme to disregard a font that may hinder the translation.

/**
* Register custom fonts.
*/
function themeslug_fonts_url() {
$fonts_url = '';
$fonts = array();
$subsets = 'latin,latin-ext';
/*
* Translators: If there are characters in your language that are not supported
* by Oswald, translate this to 'off'. Do not translate into your own language.
*/
if ( 'off' !== _x( 'on', 'Oswald font: on or off', 'themeslug' ) ) {
$fonts[] = 'Oswald:400,700';
}
/*
* Translators: If there are characters in your language that are not supported
* by Montserrat, translate this to 'off'. Do not translate into your own language.
*/
if ( 'off' !== _x( 'on', 'Montserrat font: on or off', 'themeslug' ) ) {
$fonts[] = 'Montserrat:400,700';
}
if ( $fonts ) {
$fonts_url = add_query_arg( array(
'family' => urlencode( implode( '|', $fonts ) ),
'subset' => urlencode( $subsets ),
), 'https://fonts.googleapis.com/css' );
}
return esc_url_raw( $fonts_url );
}
/**
* Enqueue scripts and styles.
*/
function themeslug_scripts() {
// Add custom fonts, used in the main stylesheet.
wp_enqueue_style( 'themeslug-fonts', themeslug_fonts_url(), array(), null );
}
add_action( 'wp_enqueue_scripts', 'themeslug_scripts' );

If you are in a similar position as I am, trying to sharpen your WordPress skillset, I highly recommend tearing into some of the default themes. They are a plethora of knowledge.

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