Hello how are you?
Welcome to the Microsoft Community!
My name is Marcelo C., I am an independent consultant, I am here to help you in the best possible way.
Zooming out with a Ctrl key
Outside browsers, some possible procedures to zoom out of your computer screen using a CTRL key combined with some other keys. See below how to shrink the PC screen using the keyboard:
While holding down the CTRL key, rotate the mouse wheel down, or make the corresponding movement on your netbook, notebook or ultrabook trackpad.
While holding down the CTRL key, also press the - (minus sign) key to thereby zoom out.
Press the CTRL key and then the 0 (zero) key to return to the screen format prior to the appearance of the zoom. The screen will be in its original (“normal”) format.
How to shrink the Windows 10 PC start screen
10 is the latest version of Windows and also has the option to change the screen resolution. See below how to zoom out your PC by changing the resolution of Windows 10:
Turn on your computer and on the start screen (Desktop) select with the right mouse button the option "Display settings";
Go to "Adjust scale and layout" and find the option "Screen resolution";
From the options, select the resolution you want. In general, computers come from the factory configured with maximum resolution, so it will only be possible to reduce it.
I hope the information above helps. Please let me know how it goes.
Have a nice day and stay safe.
Marcelo de C.