The screenshot above of this sites home page on a Desktop PC shows the above the fold content, it includes 4 images (the header image, one main content image and two ‘thumbnail size’ widget images) this content MUST load as quickly as possible (especially on mobile devices on slower connections) for a good user experience, any delays loading the above the fold content will annoy visitors and a percentage will leave!
The below the fold content (what the user can’t see) isn’t as important and the images (around 15 below the fold images on this sites home page) in particular could be delayed (lazy loaded).
Continue Reading LazyLoad Images to Improve SEO Performance and Usability