HTTP Strict Transport Security (HSTS) informs browsers that the site should only be accessed using HTTPS.
Ko-fi is an online platform that helps content creators get the financial support.
Progressive Web Apps (PWAs) are web apps built and enhanced with modern APIs to deliver enhanced capabilities, reliability, and installability while reaching anyone, anywhere, on any device, all with a single codebase.
Typekit is an online service which offers a subscription library of fonts.
Vercel is a cloud platform for static frontends and serverless functions.