Google Fonts is a free web service that offers a vast collection of fonts for use in websites and applications. It allows designers and developers to easily access and integrate various typefaces into their projects, enhancing the visual appeal of their content. The fonts are optimized for web use, ensuring fast loading times and compatibility across different devices. Users can browse through hundreds of font families, filter by categories, and preview how the fonts look with their own text. Google Fonts supports both standard and custom styles, making it a versatile tool for anyone looking to improve typography in their digital work.