This utility converts Mapbox GL Style font names or fontstacks into CSS-compatible font definitions, making it easier to apply consistent typography across web mapping applications. It handles both single fonts and fontstacks, applying the primary font's style and weight to fallback fonts, and includes replacements for fonts not commonly available on the web. This tool is ideal for developers working with Mapbox GL or similar mapping libraries who need to ensure text rendering consistency between maps and other web content.