“Website speed is something crucial to any page, specially if you consider that users don’t like slow sites and don’t want to wait more than a couple seconds for a page to load. From regular users to high-end ones, no one like to wait too much to see the content they are looking for. And from niche blogs to ecommerce sites, all users have the same expectations, that your page will be fast enough to avoid frustration.”

Source: http://designm.ag/web-designs/6-free-tools-for-testing-website-speed