Hello there, @jjp2.

The image column allows you to identify what item displays on the Products and Services page.

On the invoice, the line item only shows the details of the item. As a workaround mention by my colleague, you can use the attachments option to add images on it. 

You can visit our blog site to explore some resources on managing your invoices in QuickBooks: The QuickBooks Blog.

Please tag me directly if you have additional questions. I'm always here to help you.