In fact, the probability of a user bouncing off a mobile webpage increases by 32 percent when the page takes between one and three seconds to load (compared to pages that load in under one second).
The longer the load time, the higher the bounce rate:
Speed matters – people won’t wait around if your website is slow to load.
The Key Takeaway: Ensure your website loads fast – super fast.
One of the easiest and most effective ways is to decrease the size of the image files on your webpage.