wp_register_font_collection( string $slug, array $args ): WP_Font_Collection|WP_Error

Registers a new font collection in the font library.


See https://schemas.wp.org/trunk/font-collection.json for the schema the font collection data must adhere to.


Font collection slug. May only contain alphanumeric characters, dashes, and underscores. See sanitize_title() .
Font collection data.
  • name string
    Required. Name of the font collection shown in the Font Library.
  • description string
    Optional. A short descriptive summary of the font collection. Default empty.
  • font_families array|string
    Required. Array of font family definitions that are in the collection, or a string containing the path or URL to a JSON file containing the font collection.
  • categories array
    Optional. Array of categories, each with a name and slug, that are used by the fonts in the collection. Default empty.


WP_Font_Collection|WP_Error A font collection if it was registered successfully, or WP_Error object on failure.


function wp_register_font_collection( string $slug, array $args ) {
	return WP_Font_Library::get_instance()->register_font_collection( $slug, $args );



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