I can help you share some insights about printing your invoices in QuickBooks Online, punithgsm.
When you're preparing your invoice, here's how to print it:
Please note that the maximum font size in QuickBooks Online (QBO) is up to 12 points (pt). You'll want to import your custom form style so you can design your invoice. Here's our detailed instructions: Import custom form styles for invoices or estimates
Keep me posted if you need more help with printing invoices in QBO. I'm always here to help.