Welcome to the Community, wdbersh.
Allow me to assist you and ensure that your screen will be restored to its original size. Here's how:
First, you can use these Keyboard shortcuts:
- Hold on both Ctrl and press + to zoom in or - to zoom out.
Alternatively, you can utilize your computer's Mouse:
- Hold the Ctrl key and scroll then mouse wheel upward to zoom in or downward to zoom out.
Additionally, you can also operate in the Settings.
- At the top right corner of your screen, click the three-dot menu icon.
- Then, adjust the Zoom by clicking + to zoom in or - to zoom out.

This article will help you how to change your settings and personalize your QBO to work the way you want it: Edit company settings in QuickBooks Online.
Feel free to visit the Community if you have additional questions about your preference. We're here to make sure your concerns are well taken care of. Have a nice day.