Here are some of the more common items to test and optimize: Button vs. text links Location of your call to actions Size, color, and contrast of your action buttons Page speed Adding images Headlines Site copy Testimonials Signs of social proof (such as pictures of happy customers, case studies, press mentions, and statistics about product usage) Number of form fields Allowing users to test the product before signing up Ease of signup (Facebook Connect, Twitter login, etc.) Length of the signup process (the shorter you can make the process, the higher your conversion percentage will be)
