Can i print qb onliine invoice in one pag ewith largr list of items and my total of invoice is not showing n invoice

Hi there. I'll help you customize your invoice font in QuickBooks Online (QBO).

Changing the font size in the invoice settings will apply to all the information displayed in the invoice. It means that the font size change will affect not only the item list but also the customer details, invoice number, dates, and any other text on the invoice.  You can make the font slightly larger than it typically is. The standard font size is set to 10 pt, and you can up it to 12 pt. I've included some steps to make the font larger below. 

Here's how: 

1. Click on the Gear Icon.
2. Choose Custom Form Styles. 
3. From the Standard custom form, tap on Edit. 
4. Select the Design tab. 
5. Scroll down to the Select different font section. 
6. From there, change the font size. 

See this screenshot below for your  visual reference. 

On the other hand, you can submit Feedback to customize the font size for specific details or remove the invoice total on an individual basis. This way, they can evaluate the possibility of incorporating this in future updates.

To start: 

1. Go to the Gear icon, then Feedback.
2. Enter your comments or product suggestions.
3. Tap Next to submit.

Once done, your valuable suggestion goes to our Product Development team to help improve your QBO experience. You can track feature requests through the QuickBooks Online Feature Requests website.

I'm including this link for additional tips on sending invoices from QuickBooks: Create and send an invoice.

Additionally, here's how to track payments once your clients pay their dues: Record invoice payments in QuickBooks Online.

Please notify me in the comment section below if you have other questions about customizing invoices. I'm just a few clicks away to help you again. Have a good one!