A great way to increase conversions is to place a prominent "Add to Cart" button on your product page. A clearly visible button leaves no doubt for your visitors as to what the next step in the process should be. 

Here are some factors to consider on this oh so important button:
  • Place the button in an area that the user is likely to see without having to scroll down or across the page.
  • Make it larger than other design elements on the page so that it draws attention.
  • Think about duplicating the button - one at the top and one at the bottom.
  • Keep the text short. For example, don't say "Add item to the cart", where "Add to cart" will do.
  • Use local terminology. In the UK you typically see "Add to Basket", and I've seen "Add to Shopping Bag" in Australia.
"Add to Cart" button round-ups: