I was working on a product that did user-agent sniffing to figure out which image formats were supported (when to serve WebP). A feature-detection based approa

I was working on a product that did user-agent sniffing to figure out which image formats were supported (when to serve WebP). A feature-detection based approach is substantially slower because it breaks the preload scanner: https://www.jefftk.com/p/why-parse-the-user-agent https://www.jefftk.com/p/why-parse-the-user-agent