system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5 What exactly happens to web content outside of the viewport when you scroll? Does the web browser still see it? What parts of the content does the browser ignore?
gpt
Short answer - it depends. But more elaborate is that it depends on how the website was coded itself. By default, browser will load full webpage once you open the URL and that’s what happens in most cases. Some websites though uses approach that would limit this, for example lazy loading - which loads all the content, but images and first loads only the ones in viewport and proceeds load rest afterwards. This will result in webpage appearing to be loading quicker.