The speed of your site is vitally important when it comes to achieving sales. Research has shown that for every 1 second it takes your site to load, your business loses 7% of its revenue. For a large ecommerce site like Amazon, it could cost the business $1.6 billion in sales. One of the biggest culprits of slow sites is not having your images optimised. The difference between an image that has been optimised and one that has not can be highly significant. For instance, take a look at the ima...