Icons

Icon are Important

The reasoning is that visitors can quickly acknowledge an image or pictogram without needing to read and understand the context. This is a benefit on the homepage because you will constantly have visitors looking at your page and attempting to figure out what you do. Icons will separate out more of the complexity so users now have a choice to read the features or skim past them.

History of Icons

But use caution. Relying solely on icons can be confusing. See this article on How Icons are ruining interfaces for a more detailed explanation. Use icons with labels.