Hi there, darin1.

I'm here with some insight to provide on your question regarding check customization in QuickBooks Online.

At this time, QuickBooks Online (QBO) doesn't have the option to add a company logo/info to your checks. For more insight about this, I'm also including this article: How to add, customize, and troubleshoot logo on sales forms

I can see how adding a personal touch to those checks could help your business exemplify its style, so I'm sending a feature request up to our Product Development Team for review. They're constantly looking for great ideas from users, like yourself, when deciding how to enhance QuickBooks Online.

Please know you can always reach me here if there's anything else I can do for you, I want to ensure you're taken care of properly. Thanks for coming to the Community and take care.