Suddenly the main center screen is huge...how to zoom out. Cannot see hardly anything!

Hello there,@laurie.

I acknowledge the importance of being able to view your working screen properly. Let me help you fix this issue you're experiencing. 

You can follow the steps on these articles about how to adjust the display settings on your screen so you can work on your QBO properly.

1. Mozilla Firefox
2. Google Chrome

Also, I recommend maximizing your browser window for working in QBO if your resolution is 1024x768. Here's how you can check your resolution settings on your computer:

1. Windows
2. macOS

For future reference, if your QBO is not fully loading, you can check this article for help fixing it: QuickBooks Online doesn't load correctly or has blank pages.

We're all ears if you need further help with your screen zooming in QBO. The Community space is always here to assist you.