Lazy loading: what does it mean?

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You are browsing a website full of photos and downloadable material . As you scroll with the mouse wheel, you have the impression that the page loads progressively, as you view it. What you are witnessing is not an impression: it is lazy loading , a tool implemented by the web master to lighten the load on the connection and increase the loading speed .


Lazy loading is English, and it means “ lazy loading ”. More realistically, lazy loading is a content loading setting that does not happen when the page is launched, but “ on demand ”, that is, while you scroll telegram number through the content and you come across, viewing them on the screen, images and elements that could slow down the use. In this way, the system loads only the portion of the page that the user needs, allowing him to rationalize the download speed and optimize the viewing times. Nobody likes it when a page, for unknown reasons, starts loading starting from the last image at the bottom, and moving up.

Lazy loading is a perfect configuration for loading images, scripts and videos, that is, all those contents that would slow down the use of the page, weighing down the loading with their presence.