Looking to just change the text size of Windows 10 and not the overall size of all items on the PC? This guide will show how to change just the text size in Windows 10. NOTE: This requires Windows 10 version 1903 or later to be installed. Right click on the Start button, typically found at the lower-left corner of the screen, then click on Settings. 2. From the Windows Settings screen that appears, click on Ease of Access. 3. On the Settings page that opens, by default it will open to “Display”First, adjust the slider here (1) for text size, then click Apply (2) to make any changes. That's it, you may make adjustments to this setting at any time. The default setting for Windows 10 is the slider to be all the way to the left.