I'll show a way where you can adjust the font, pam@lloydangove.
You can modify the invoice template by following these steps:
- Go to the Gear > Custom Form Styles.
- Select the Edit link of the default invoice template.
- In the Design tab, click the Select a different font section and change the font size.
- Hit Done.
Here's a sample screenshot for a visual guide:
You can also read this article for more customisation: Customise invoices, quotes, and sales receipts in QuickBooks Online.
I'll be around if there's anything else you need help with QuickBooks Online. Thanks.