Cloudflare Browser Insights is a tool that measures the performance of websites from the perspective of users.
Fastly is a cloud computing services provider. Fastly's cloud platform provides a content delivery network, Internet security services, load balancing, and video & streaming services.
GitHub Pages is a static site hosting service.
JSDelivr is a free public CDN for open-source projects. It can serve web files directly from the npm registry and GitHub repositories without any configuration.
The lite-youtube-embed technique renders the YouTube video inside the IFRAME tag only when the play button in clicked thus improving the core web vitals score of your website.
Pico CSS is a minimal CSS framework for semantic HTML, without using classes.
Varnish is a reverse caching proxy.