You need to optimize you website speed because according to Google, mobile browsers will leave your page if it takes more than three seconds to load. Similar figures are true for users browsing from desktops.
There are two critical factors when looking at Site Speed:
Website speed refers to how quickly users can move from page to page, once they are on a website.
Page load speed refers to how quickly each page downloads to the device, including the critical landing page a consumer visits first.
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