cdnjs is a free distributed JS library delivery service.
Firebase is a Google-backed application development software that enables developers to develop iOS, Android and Web apps.
Flowbite is an open-source library of UI components based on the utility-first Tailwind CSS framework featuring dark mode support, a Figma design system, and more.
HTTP Strict Transport Security (HSTS) informs browsers that the site should only be accessed using HTTPS.
HTTP/3 is the third major version of the Hypertext Transfer Protocol used to exchange information on the World Wide Web.
Typekit is an online service which offers a subscription library of fonts.
Unpkg is a content delivery network for everything on npm.