URGEN To prevent long page load times for pages containing images, it is best to use a compressed file format such as JPG, as well as appropriate image dimensions and

Lazy loading images

Explanation:

Though this will help with your page load times, you can also lazy-load images. This allows images to only be requested by the connected client when the client reaches that element of your page. If you wish to implement this, lazyload developed by tuupola is a great way to do it, you can find it on github https://github.com/tuupola/lazyload#readme