Fonts Knowledge is a knowledge base about typography and fonts produced by Google Fonts. It contains articles written by typography experts on a wide range of topics related to fonts, including choosing fonts, the history of type design, using fonts on the web and in different languages, variable fonts, and more. The articles aim to educate designers and developers of all skill levels about typography. Visitors can browse articles by topic or read introductory pieces about basic typography concepts. There is also a glossary of typographic terms.