Adam Douglas Erm, not really. JavaScript is allowed; the requirement is that the site be usable without JS. What browser do you tend to use? I'm not going to recommend a browser here, I'm just curious because I too have noticed bugs with lazyloaders, usually rooted in buggy getBoundingClientRect() behaviour. Anyway, here's an example of lazyloading in the 10K Apart submissions: 2g-news1-10kapart2... --most of the submissions will use JavaScript to load their assets to be honest, because you're allowed to load as much as you want asynchronously. The objective is to avoid blocking render.