cdnjs is a free distributed JS library delivery service.
Glide.js is a dependency-free JavaScript ES6 slider and carousel.
HTTP Strict Transport Security (HSTS) informs browsers that the site should only be accessed using HTTPS.
Open Graph is a protocol that is used to integrate any web page into the social graph.
PHP is a general-purpose scripting language used for web development.
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.
reCAPTCHA is a free service from Google that helps protect websites from spam and abuse.
WP-Optimize is an all-in-one WordPress plugin that cleans your database, compresses your large images and caches your site.