On the desktop, press and hold Ctrl while you scroll the wheel to make icons larger or smaller. This is useful if you dislike the default icon of an app or if you want to add a personal touch to your Windows 10 computer or device. Tip: You can also use the scroll wheel on your mouse to resize desktop icons. In Windows 10, you can change any shortcut icon, whether it's a regular one linking to an app, file, folder, or web page or one of the standard desktop icons. To resize desktop icons, right-click (or press and hold) the desktop, point to View, then select Large icons, Medium icons, or Small icons. Learn how to make the change the scale and layout settings to adjust your screen size and make text and apps appear bigger or smaller in Windows 10.

Although File Explorer will remember your last setting when you open this folder again, this is a folder-specific setting, so you'll have to adjust each folder you'd want different icon and text sizes for. Right-click (or press and hold) the desktop, point to View, and then select Large icons, Medium icons, or Small icons.

Change individual icon size windows 10