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.
Ko-fi is an online platform that helps content creators get the financial support.
Liberapay is a non-profit organisation subscription payment platform.
Open Graph is a protocol that is used to integrate any web page into the social graph.