This is a custom-element that allows you to progressively loading images when the placeholders are clicked/tapped or scrolled into view.
Vimeo LazyLoad loads Vimeo video player on-demand when the user clicks on the play button & thumbnail image.
lazysizes is an easy yet robust JS library used to delay the loading of images (iframes, scripts, etc) until they come into view.
The lite-youtube component makes Youtube video embed much faster than the traditional iframe method.
Yet another Youtube lazy loader that delays the loading of Youtube video player to improve the performance of your web page.