Font libraries are collections of typefaces that designers and developers can use in their projects. These libraries provide a wide variety of fonts, ranging from classic styles to modern designs, allowing users to choose the perfect typeface for their needs. Many font libraries are available online, making it easy to access and integrate fonts into websites and applications. Some popular font libraries include Google Fonts, Adobe Fonts, and Font Squirrel. These platforms often offer fonts for free or through subscription services, enabling users to find high-quality typography without extensive costs. By utilizing font libraries, creators can enhance the visual appeal of their work.