Phoca Font is Joomla! CMS component. It adds support for using internal and external fonts in your Joomla! site. Phoca Font supports variable fonts. Variable font is a specification that enables many different variations of a typeface to be incorporated into a single file. External fonts are fonts listed in Google Fonts directory and such fonts can be displayed on your website.
With help of variable fonts, you can load only one font file (e.g. format woff2) and such will care about all variants (thin, bold, black) and styles (normal, italic).