Need a Quickbooks invoice customizing app

I’m needing Document Creator/Graphic editor app with Quickbooks integration for QBO (Quickbooks online). Their existing customization options are not very robust and hav elicited options for my needs. So I’m wanting to create an app that integrates directly with Quickbooks and offers full page customization of all aspects such as but not limited to
-Size of page, dimensions
-Margins
-Logo/Images
-Font/font size
-Tables
-Simple math/ addition/ subtraction for totaling
-colors/ gradients
-watermarks

Similar to a simple/limited version of photoshop except of course It does not need to be nearly as robust as photoshop but the web app will have a UI similar to photoshop, a familiar interface.