Open met de inspector tools van je browser de console tab en plak de onderstaande code.
function findATFLazyLoadedImages() { const lazy = document.querySelectorAll('[loading="lazy"]'); let flag = false; lazy.forEach((tag) => { const position = parseInt(tag.getBoundingClientRect().top); if (position < window.innerHeight && position !== 0) { console.log(tag, position); flag = true; } }); return flag; } console.log(findATFLazyLoadedImages());